213121883577 has 16 divisors (see below), whose sum is σ = 285777461952. Its totient is φ = 141276041280.

The previous prime is 213121883551. The next prime is 213121883593. The reversal of 213121883577 is 775388121312.

It is a happy number.

It is not a de Polignac number, because 213121883577 - 2⁷ = 213121883449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213121883977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95302 + ... + 659792.

It is an arithmetic number, because the mean of its divisors is an integer number (17861091372).

Almost surely, 2^213121883577 is an apocalyptic number.

It is an amenable number.

213121883577 is a deficient number, since it is larger than the sum of its proper divisors (72655578375).

213121883577 is a wasteful number, since it uses less digits than its factorization.

213121883577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565208.

The product of its digits is 564480, while the sum is 48.

The spelling of 213121883577 in words is "two hundred thirteen billion, one hundred twenty-one million, eight hundred eighty-three thousand, five hundred seventy-seven".