213211143650 has 24 divisors (see below), whose sum is σ = 403073925204. Its totient is φ = 83886350400.

The previous prime is 213211143647. The next prime is 213211143671. The reversal of 213211143650 is 56341112312.

It can be written as a sum of positive squares in 6 ways, for example, as 22216796809 + 190994346841 = 149053^2 + 437029^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34949597 + ... + 34955696.

Almost surely, 2^213211143650 is an apocalyptic number.

213211143650 is a deficient number, since it is larger than the sum of its proper divisors (189862781554).

213211143650 is a wasteful number, since it uses less digits than its factorization.

213211143650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69905366 (or 69905361 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 213211143650 its reverse (56341112312), we get a palindrome (269552255962).

The spelling of 213211143650 in words is "two hundred thirteen billion, two hundred eleven million, one hundred forty-three thousand, six hundred fifty".