213121296 has 60 divisors (see below), whose sum is σ = 597453948. Its totient is φ = 70920192.

The previous prime is 213121283. The next prime is 213121303. The reversal of 213121296 is 692121312.

213121296 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51322896 + 161798400 = 7164^2 + 12720^2 .

It is a nude number because it is divisible by every one of its digits.

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, 136456 + ... + 138008.

Almost surely, 2^213121296 is an apocalyptic number.

It is an amenable number.

213121296 is an abundant number, since it is smaller than the sum of its proper divisors (384332652).

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

213121296 is a wasteful number, since it uses less digits than its factorization.

213121296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2511 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 213121296 is about 14598.6744603748. The cubic root of 213121296 is about 597.3226036861.

The spelling of 213121296 in words is "two hundred thirteen million, one hundred twenty-one thousand, two hundred ninety-six".