213513552722 has 4 divisors (see below), whose sum is σ = 320270329086. Its totient is φ = 106756776360.

The previous prime is 213513552719. The next prime is 213513552751. The reversal of 213513552722 is 227255315312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115388616721 + 98124936001 = 339689^2 + 313249^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53378388179 + ... + 53378388182.

Almost surely, 2^213513552722 is an apocalyptic number.

213513552722 is a deficient number, since it is larger than the sum of its proper divisors (106756776364).

213513552722 is a wasteful number, since it uses less digits than its factorization.

213513552722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106756776363.

The product of its digits is 126000, while the sum is 38.

The spelling of 213513552722 in words is "two hundred thirteen billion, five hundred thirteen million, five hundred fifty-two thousand, seven hundred twenty-two".