211212202122120 has 64 divisors (see below), whose sum is σ = 633640902733440. Its totient is φ = 56322872000000.

The previous prime is 211212202122107. The next prime is 211212202122149. The reversal of 211212202122120 is 21221202212112.

It is a super-2 number, since 2×211212202122120² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12029620 + ... + 23814620.

It is an arithmetic number, because the mean of its divisors is an integer number (9900639105210).

Almost surely, 2^{211212202122120} is an apocalyptic number.

211212202122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211212202122120 is an abundant number, since it is smaller than the sum of its proper divisors (422428700611320).

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

211212202122120 is a wasteful number, since it uses less digits than its factorization.

211212202122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11934366 (or 11934362 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211212202122120 its reverse (21221202212112), we get a palindrome (232433404334232).

The spelling of 211212202122120 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty".