213240211992 has 24 divisors (see below), whose sum is σ = 577525574340. Its totient is φ = 71080070640.

The previous prime is 213240211981. The next prime is 213240211993. The reversal of 213240211992 is 299112042312.

213240211992 is a `hidden beast` number, since 2 + 132 + 402 + 119 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213240211993) by changing a digit.

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, 1480834734 + ... + 1480834877.

Almost surely, 2^213240211992 is an apocalyptic number.

It is an amenable number.

213240211992 is an abundant number, since it is smaller than the sum of its proper divisors (364285362348).

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

213240211992 is a wasteful number, since it uses less digits than its factorization.

213240211992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961669623 (or 2961669616 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 213240211992 in words is "two hundred thirteen billion, two hundred forty million, two hundred eleven thousand, nine hundred ninety-two".