211131232002 has 12 divisors (see below), whose sum is σ = 457451002710. Its totient is φ = 70377077328.

The previous prime is 211131231979. The next prime is 211131232043. The reversal of 211131232002 is 200232131112.

211131232002 is a `hidden beast` number, since 21 + 11 + 312 + 320 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 177098730561 + 34032501441 = 420831^2 + 184479^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11729512889 = 211131232002 / (2 + 1 + 1 + 1 + 3 + 1 + 2 + 3 + 2 + 0 + 0 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5864756427 + ... + 5864756462.

Almost surely, 2^211131232002 is an apocalyptic number.

211131232002 is an abundant number, since it is smaller than the sum of its proper divisors (246319770708).

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

211131232002 is a wasteful number, since it uses less digits than its factorization.

211131232002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11729512897 (or 11729512894 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 211131232002 its reverse (200232131112), we get a palindrome (411363363114).

The spelling of 211131232002 in words is "two hundred eleven billion, one hundred thirty-one million, two hundred thirty-two thousand, two".