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123223222213 = 7213224386243
BaseRepresentation
bin111001011000010101…
…1010010011111000101
3102210001122020021010221
41302300223102133011
54004330121102323
6132335153144341
711621405051500
oct1626053223705
9383048207127
10123223222213
1148293329733
121ba6b25b0b1
13b809bc6b50
145d6d458137
153312e3e55d
hex1cb0ad27c5

123223222213 has 24 divisors (see below), whose sum is σ = 154438165728. Its totient is φ = 97450700256.

The previous prime is 123223222207. The next prime is 123223222219. The reversal of 123223222213 is 312222322321.

It is an interprime number because it is at equal distance from previous prime (123223222207) and next prime (123223222219).

It is not a de Polignac number, because 123223222213 - 221 = 123221125061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123223222219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1385670 + ... + 1471912.

It is an arithmetic number, because the mean of its divisors is an integer number (6434923572).

Almost surely, 2123223222213 is an apocalyptic number.

123223222213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123223222213 is a deficient number, since it is larger than the sum of its proper divisors (31214943515).

123223222213 is a wasteful number, since it uses less digits than its factorization.

123223222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88513 (or 88506 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

Adding to 123223222213 its reverse (312222322321), we get a palindrome (435445544534).

The spelling of 123223222213 in words is "one hundred twenty-three billion, two hundred twenty-three million, two hundred twenty-two thousand, two hundred thirteen".

Divisors: 1 7 13 49 91 637 2243 15701 29159 86243 109907 204113 603701 1121159 1428791 4225907 7848113 54936791 193443049 1354101343 2514759637 9478709401 17603317459 123223222213