2131221295 has 16 divisors (see below), whose sum is σ = 2958036480. Its totient is φ = 1443799584.

The previous prime is 2131221283. The next prime is 2131221359. The reversal of 2131221295 is 5921221312.

It is a cyclic number.

It is not a de Polignac number, because 2131221295 - 2²¹ = 2129124143 is a prime.

It is a super-2 number, since 2×2131221295² = 9084208416522954050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363915 + ... + 369724.

It is an arithmetic number, because the mean of its divisors is an integer number (184877280).

Almost surely, 2^2131221295 is an apocalyptic number.

2131221295 is a deficient number, since it is larger than the sum of its proper divisors (826815185).

2131221295 is an equidigital number, since it uses as much as digits as its factorization.

2131221295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733734.

The product of its digits is 2160, while the sum is 28.

The square root of 2131221295 is about 46165.1523879213. The cubic root of 2131221295 is about 1286.8942161631.

The spelling of 2131221295 in words is "two billion, one hundred thirty-one million, two hundred twenty-one thousand, two hundred ninety-five".