211098961972 has 24 divisors (see below), whose sum is σ = 383677902720. Its totient is φ = 101552831040.

The previous prime is 211098961919. The next prime is 211098961973. The reversal of 211098961972 is 279169890112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211098961973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9504729 + ... + 9526912.

It is an arithmetic number, because the mean of its divisors is an integer number (15986579280).

Almost surely, 2^211098961972 is an apocalyptic number.

It is an amenable number.

211098961972 is a deficient number, since it is larger than the sum of its proper divisors (172578940748).

211098961972 is a wasteful number, since it uses less digits than its factorization.

211098961972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19031751 (or 19031749 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 55.

The spelling of 211098961972 in words is "two hundred eleven billion, ninety-eight million, nine hundred sixty-one thousand, nine hundred seventy-two".