213021211121310 has 64 divisors (see below), whose sum is σ = 514226081207808. Its totient is φ = 56475106856064.

The previous prime is 213021211121293. The next prime is 213021211121339. The reversal of 213021211121310 is 13121112120312.

It is a super-2 number, since 2×213021211121310² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135105969 + ... + 136673571.

It is an arithmetic number, because the mean of its divisors is an integer number (8034782518872).

Almost surely, 2^{213021211121310} is an apocalyptic number.

213021211121310 is an abundant number, since it is smaller than the sum of its proper divisors (301204870086498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213021211121310 is a wasteful number, since it uses less digits than its factorization.

213021211121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593969.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 213021211121310 its reverse (13121112120312), we get a palindrome (226142323241622).

The spelling of 213021211121310 in words is "two hundred thirteen trillion, twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, three hundred ten".