211121120212120 has 64 divisors (see below), whose sum is σ = 493636739616000. Its totient is φ = 81175819261440.

The previous prime is 211121120212109. The next prime is 211121120212139. The reversal of 211121120212120 is 21212021121112.

It is a happy number.

211121120212120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 571154059 + ... + 571523578.

It is an arithmetic number, because the mean of its divisors is an integer number (7713074056500).

Almost surely, 2^{211121120212120} is an apocalyptic number.

211121120212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121120212120 is an abundant number, since it is smaller than the sum of its proper divisors (282515619403880).

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

211121120212120 is a wasteful number, since it uses less digits than its factorization.

211121120212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142677828 (or 1142677824 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211121120212120 its reverse (21212021121112), we get a palindrome (232333141333232).

The spelling of 211121120212120 in words is "two hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty".