2131221303 has 12 divisors (see below), whose sum is σ = 3259515168. Its totient is φ = 1337236800.

The previous prime is 2131221283. The next prime is 2131221359. The reversal of 2131221303 is 3031221312.

It is not a de Polignac number, because 2131221303 - 2¹⁴ = 2131204919 is a prime.

It is a super-2 number, since 2×2131221303² = 9084208484722035618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131221373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6964623 + ... + 6964928.

It is an arithmetic number, because the mean of its divisors is an integer number (271626264).

Almost surely, 2^2131221303 is an apocalyptic number.

2131221303 is a deficient number, since it is larger than the sum of its proper divisors (1128293865).

2131221303 is a wasteful number, since it uses less digits than its factorization.

2131221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13929574 (or 13929571 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2131221303 is about 46165.1524745668. The cubic root of 2131221303 is about 1286.8942177733.

Adding to 2131221303 its reverse (3031221312), we get a palindrome (5162442615).

Subtracting 2131221303 from its reverse (3031221312), we obtain a palindrome (900000009).

The spelling of 2131221303 in words is "two billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred three".