2221202131 has 2 divisors, whose sum is σ = 2221202132. Its totient is φ = 2221202130.

The previous prime is 2221202117. The next prime is 2221202143. The reversal of 2221202131 is 1312021222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221202131 - 2¹¹ = 2221200083 is a prime.

It is a super-2 number, since 2×2221202131² = 9867477813517882322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221202231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110601065 + 1110601066.

It is an arithmetic number, because the mean of its divisors is an integer number (1110601066).

Almost surely, 2^2221202131 is an apocalyptic number.

2221202131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221202131 is an equidigital number, since it uses as much as digits as its factorization.

2221202131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2221202131 is about 47129.6311358364. The cubic root of 2221202131 is about 1304.7561737228.

Adding to 2221202131 its reverse (1312021222), we get a palindrome (3533223353).

The spelling of 2221202131 in words is "two billion, two hundred twenty-one million, two hundred two thousand, one hundred thirty-one".