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122220220213 = 7135171259733
BaseRepresentation
bin111000111010011100…
…1001000111100110101
3102200110201220111001201
41301310321020330311
54000301334021323
6132051443252501
711554505505430
oct1616471107465
9380421814051
10122220220213
1147919145463
121b82b37a131
13b6aa178440
145cb6168817
1532a4d688ad
hex1c74e48f35

122220220213 has 16 divisors (see below), whose sum is σ = 150454555776. Its totient is φ = 96682639680.

The previous prime is 122220220201. The next prime is 122220220271. The reversal of 122220220213 is 312022022221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122220220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122220220313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340695 + ... + 600427.

It is an arithmetic number, because the mean of its divisors is an integer number (9403409736).

Almost surely, 2122220220213 is an apocalyptic number.

122220220213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122220220213 is a deficient number, since it is larger than the sum of its proper divisors (28234335563).

122220220213 is a wasteful number, since it uses less digits than its factorization.

122220220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264924.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 122220220213 its reverse (312022022221), we get a palindrome (434242242434).

The spelling of 122220220213 in words is "one hundred twenty-two billion, two hundred twenty million, two hundred twenty thousand, two hundred thirteen".

Divisors: 1 7 13 91 5171 36197 67223 259733 470561 1818131 3376529 23635703 1343079343 9401555401 17460031459 122220220213