202100020321123 has 2 divisors, whose sum is σ = 202100020321124. Its totient is φ = 202100020321122.

The previous prime is 202100020321117. The next prime is 202100020321139. The reversal of 202100020321123 is 321123020001202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202100020321123 is a prime.

It is a super-2 number, since 2×202100020321123² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202100020321123.

It is not a weakly prime, because it can be changed into another prime (202100020325123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050010160561 + 101050010160562.

It is an arithmetic number, because the mean of its divisors is an integer number (101050010160562).

Almost surely, 2^{202100020321123} is an apocalyptic number.

202100020321123 is a deficient number, since it is larger than the sum of its proper divisors (1).

202100020321123 is an equidigital number, since it uses as much as digits as its factorization.

202100020321123 is an evil number, because the sum of its binary digits is even.

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

Adding to 202100020321123 its reverse (321123020001202), we get a palindrome (523223040322325).

The spelling of 202100020321123 in words is "two hundred two trillion, one hundred billion, twenty million, three hundred twenty-one thousand, one hundred twenty-three".