23210212001021 has 8 divisors (see below), whose sum is σ = 23453115833784. Its totient is φ = 22967382113280.

The previous prime is 23210212001017. The next prime is 23210212001057. The reversal of 23210212001021 is 12010021201232.

It can be written as a sum of positive squares in 4 ways, for example, as 6020987212900 + 17189224788121 = 2453770^2 + 4145989^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23210212001021 - 2² = 23210212001017 is a prime.

It is a super-2 number, since 2×23210212001021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210212001621) 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, 17855090 + ... + 19110851.

It is an arithmetic number, because the mean of its divisors is an integer number (2931639479223).

Almost surely, 2^{23210212001021} is an apocalyptic number.

It is an amenable number.

23210212001021 is a deficient number, since it is larger than the sum of its proper divisors (242903832763).

23210212001021 is an equidigital number, since it uses as much as digits as its factorization.

23210212001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36972511.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 23210212001021 its reverse (12010021201232), we get a palindrome (35220233202253).

The spelling of 23210212001021 in words is "twenty-three trillion, two hundred ten billion, two hundred twelve million, one thousand, twenty-one".