23101204034021 has 4 divisors (see below), whose sum is σ = 23104515092172. Its totient is φ = 23097892975872.

The previous prime is 23101204034017. The next prime is 23101204034023. The reversal of 23101204034021 is 12043040210132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2487288568996 + 20613915465025 = 1577114^2 + 4540255^2 .

It is a cyclic number.

It is not a de Polignac number, because 23101204034021 - 2² = 23101204034017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23101204034023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655518610 + ... + 1655532563.

It is an arithmetic number, because the mean of its divisors is an integer number (5776128773043).

Almost surely, 2^{23101204034021} is an apocalyptic number.

It is an amenable number.

23101204034021 is a deficient number, since it is larger than the sum of its proper divisors (3311058151).

23101204034021 is an equidigital number, since it uses as much as digits as its factorization.

23101204034021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311058150.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 23101204034021 its reverse (12043040210132), we get a palindrome (35144244244153).

The spelling of 23101204034021 in words is "twenty-three trillion, one hundred one billion, two hundred four million, thirty-four thousand, twenty-one".