211901187051 has 16 divisors (see below), whose sum is σ = 318228066720. Its totient is φ = 139332286080.

The previous prime is 211901187013. The next prime is 211901187061. The reversal of 211901187051 is 150781109112.

It is not a de Polignac number, because 211901187051 - 2²⁶ = 211834078187 is a prime.

It is a super-2 number, since 2×211901187051² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211901186997 and 211901187015.

It is not an unprimeable number, because it can be changed into a prime (211901187061) 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, 53752770 + ... + 53756711.

It is an arithmetic number, because the mean of its divisors is an integer number (19889254170).

Almost surely, 2^211901187051 is an apocalyptic number.

211901187051 is a deficient number, since it is larger than the sum of its proper divisors (106326879669).

211901187051 is a wasteful number, since it uses less digits than its factorization.

211901187051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107509563 (or 107509557 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 36.

The spelling of 211901187051 in words is "two hundred eleven billion, nine hundred one million, one hundred eighty-seven thousand, fifty-one".