212130002113021 has 16 divisors (see below), whose sum is σ = 228902071704768. Its totient is φ = 195836866950400.

The previous prime is 212130002113009. The next prime is 212130002113049. The reversal of 212130002113021 is 120311200031212.

It is a cyclic number.

It is not a de Polignac number, because 212130002113021 - 2⁷ = 212130002112893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212130002113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212130002113321) 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, 25089175 + ... + 32461156.

It is an arithmetic number, because the mean of its divisors is an integer number (14306379481548).

Almost surely, 2^{212130002113021} is an apocalyptic number.

It is an amenable number.

212130002113021 is a deficient number, since it is larger than the sum of its proper divisors (16772069591747).

212130002113021 is a wasteful number, since it uses less digits than its factorization.

212130002113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57554492.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212130002113021 its reverse (120311200031212), we get a palindrome (332441202144233).

The spelling of 212130002113021 in words is "two hundred twelve trillion, one hundred thirty billion, two million, one hundred thirteen thousand, twenty-one".