211100121012 has 48 divisors (see below), whose sum is σ = 551868633792. Its totient is φ = 62240820480.

The previous prime is 211100121007. The next prime is 211100121047. The reversal of 211100121012 is 210121001112.

It is a super-2 number, since 2×211100121012² (a number of 23 digits) contains 22 as substring.

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

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, 21606513 + ... + 21616280.

It is an arithmetic number, because the mean of its divisors is an integer number (11497263204).

Almost surely, 2^211100121012 is an apocalyptic number.

211100121012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211100121012 is an abundant number, since it is smaller than the sum of its proper divisors (340768512780).

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

211100121012 is a wasteful number, since it uses less digits than its factorization.

211100121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43222848 (or 43222846 counting only the distinct ones).

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

Adding to 211100121012 its reverse (210121001112), we get a palindrome (421221122124).

The spelling of 211100121012 in words is "two hundred eleven billion, one hundred million, one hundred twenty-one thousand, twelve".