23402521212001 has 16 divisors (see below), whose sum is σ = 24290490638160. Its totient is φ = 22519972500480.

The previous prime is 23402521211963. The next prime is 23402521212029. The reversal of 23402521212001 is 10021212520432.

It can be written as a sum of positive squares in 8 ways, for example, as 15219174182976 + 8183347029025 = 3901176^2 + 2860655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23402521212001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23402521212071) 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, 61470291 + ... + 61849831.

It is an arithmetic number, because the mean of its divisors is an integer number (1518155664885).

Almost surely, 2^{23402521212001} is an apocalyptic number.

It is an amenable number.

23402521212001 is a deficient number, since it is larger than the sum of its proper divisors (887969426159).

23402521212001 is a wasteful number, since it uses less digits than its factorization.

23402521212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386676.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 23402521212001 its reverse (10021212520432), we get a palindrome (33423733732433).

The spelling of 23402521212001 in words is "twenty-three trillion, four hundred two billion, five hundred twenty-one million, two hundred twelve thousand, one".