213040210122120 has 64 divisors (see below), whose sum is σ = 639504026665920. Its totient is φ = 56776643028224.

The previous prime is 213040210122067. The next prime is 213040210122227. The reversal of 213040210122120 is 21221012040312.

It is a happy number.

It is a super-2 number, since 2×213040210122120² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532293987 + ... + 532694066.

It is an arithmetic number, because the mean of its divisors is an integer number (9992250416655).

Almost surely, 2^{213040210122120} is an apocalyptic number.

213040210122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213040210122120 is an abundant number, since it is smaller than the sum of its proper divisors (426463816543800).

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

213040210122120 is a wasteful number, since it uses less digits than its factorization.

213040210122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064989734 (or 1064989730 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 213040210122120 its reverse (21221012040312), we get a palindrome (234261222162432).

The spelling of 213040210122120 in words is "two hundred thirteen trillion, forty billion, two hundred ten million, one hundred twenty-two thousand, one hundred twenty".