211100212012120 has 32 divisors (see below), whose sum is σ = 476823630657600. Its totient is φ = 84111524159488.

The previous prime is 211100212012117. The next prime is 211100212012141. The reversal of 211100212012120 is 21210212001112.

It is a junction number, because it is equal to n+sod(n) for n = 211100212012094 and 211100212012103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10267509760 + ... + 10267530319.

It is an arithmetic number, because the mean of its divisors is an integer number (14900738458050).

Almost surely, 2^{211100212012120} is an apocalyptic number.

211100212012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100212012120 is an abundant number, since it is smaller than the sum of its proper divisors (265723418645480).

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

211100212012120 is a wasteful number, since it uses less digits than its factorization.

211100212012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20535040347 (or 20535040343 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211100212012120 its reverse (21210212001112), we get a palindrome (232310424013232).

The spelling of 211100212012120 in words is "two hundred eleven trillion, one hundred billion, two hundred twelve million, twelve thousand, one hundred twenty".