211101210120 has 32 divisors (see below), whose sum is σ = 633303630720. Its totient is φ = 56293656000.

The previous prime is 211101210113. The next prime is 211101210137. The reversal of 211101210120 is 21012101112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211101210096 and 211101210105.

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, 879588256 + ... + 879588495.

It is an arithmetic number, because the mean of its divisors is an integer number (19790738460).

Almost surely, 2^211101210120 is an apocalyptic number.

211101210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211101210120 is an abundant number, since it is smaller than the sum of its proper divisors (422202420600).

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

211101210120 is a wasteful number, since it uses less digits than its factorization.

211101210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759176765 (or 1759176761 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211101210120 its reverse (21012101112), we get a palindrome (232113311232).

The spelling of 211101210120 in words is "two hundred eleven billion, one hundred one million, two hundred ten thousand, one hundred twenty".