212313012213021 has 16 divisors (see below), whose sum is σ = 300007763483904. Its totient is φ = 133095231555584.

The previous prime is 212313012213019. The next prime is 212313012213109. The reversal of 212313012213021 is 120312210313212.

It is a cyclic number.

It is not a de Polignac number, because 212313012213021 - 2¹ = 212313012213019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212313012212982 and 212313012213000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212313012213221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1887069876 + ... + 1887182381.

It is an arithmetic number, because the mean of its divisors is an integer number (18750485217744).

Almost surely, 2^{212313012213021} is an apocalyptic number.

It is an amenable number.

212313012213021 is a deficient number, since it is larger than the sum of its proper divisors (87694751270883).

212313012213021 is a wasteful number, since it uses less digits than its factorization.

212313012213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774253380.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 212313012213021 its reverse (120312210313212), we get a palindrome (332625222526233).

The spelling of 212313012213021 in words is "two hundred twelve trillion, three hundred thirteen billion, twelve million, two hundred thirteen thousand, twenty-one".