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122021312023 = 1319494013409
BaseRepresentation
bin111000110100100001…
…0010111011000010111
3102122221212121220022201
41301221002113120113
53444344423441043
6132020020105331
711546542016242
oct1615102273027
9378855556281
10122021312023
1147826938826
121b794835247
13b677bb40a0
145c9798c259
153292677c4d
hex1c69097617

122021312023 has 8 divisors (see below), whose sum is σ = 138323754800. Its totient is φ = 106706896128.

The previous prime is 122021311921. The next prime is 122021312053. The reversal of 122021312023 is 320213120221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122021312023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021312053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247006458 + ... + 247006951.

It is an arithmetic number, because the mean of its divisors is an integer number (17290469350).

Almost surely, 2122021312023 is an apocalyptic number.

122021312023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122021312023 is a deficient number, since it is larger than the sum of its proper divisors (16302442777).

122021312023 is a wasteful number, since it uses less digits than its factorization.

122021312023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494013441.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 122021312023 its reverse (320213120221), we get a palindrome (442234432244).

The spelling of 122021312023 in words is "one hundred twenty-two billion, twenty-one million, three hundred twelve thousand, twenty-three".

Divisors: 1 13 19 247 494013409 6422174317 9386254771 122021312023