2131212322 has 16 divisors (see below), whose sum is σ = 3217473792. Its totient is φ = 1058741280.

The previous prime is 2131212319. The next prime is 2131212329. The reversal of 2131212322 is 2232121312.

It is a super-2 number, since 2×2131212322² = 9084131922889263368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2131212322.

It is not an unprimeable number, because it can be changed into a prime (2131212329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222247 + ... + 231637.

It is an arithmetic number, because the mean of its divisors is an integer number (201092112).

Almost surely, 2^2131212322 is an apocalyptic number.

2131212322 is a deficient number, since it is larger than the sum of its proper divisors (1086261470).

2131212322 is a wasteful number, since it uses less digits than its factorization.

2131212322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10113.

The product of its digits is 288, while the sum is 19.

The square root of 2131212322 is about 46165.0552041260. The cubic root of 2131212322 is about 1286.8924101067.

Adding to 2131212322 its reverse (2232121312), we get a palindrome (4363333634).

The spelling of 2131212322 in words is "two billion, one hundred thirty-one million, two hundred twelve thousand, three hundred twenty-two".