210111212028 has 48 divisors (see below), whose sum is σ = 502305350400. Its totient is φ = 68316835200.

The previous prime is 210111212027. The next prime is 210111212033. The reversal of 210111212028 is 820212111012.

It is a junction number, because it is equal to n+sod(n) for n = 210111211995 and 210111212013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111212021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3015463 + ... + 3084353.

It is an arithmetic number, because the mean of its divisors is an integer number (10464694800).

Almost surely, 2^210111212028 is an apocalyptic number.

It is an amenable number.

210111212028 is an abundant number, since it is smaller than the sum of its proper divisors (292194138372).

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

210111212028 is a wasteful number, since it uses less digits than its factorization.

210111212028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75138 (or 75136 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 210111212028 in words is "two hundred ten billion, one hundred eleven million, two hundred twelve thousand, twenty-eight".