2221200031 has 2 divisors, whose sum is σ = 2221200032. Its totient is φ = 2221200030.

The previous prime is 2221200017. The next prime is 2221200049. The reversal of 2221200031 is 1300021222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221200031 - 2²³ = 2212811423 is a prime.

It is a super-2 number, since 2×2221200031² = 9867459155428801922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221199984 and 2221200020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221200001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110600015 + 1110600016.

It is an arithmetic number, because the mean of its divisors is an integer number (1110600016).

Almost surely, 2^2221200031 is an apocalyptic number.

2221200031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221200031 is an equidigital number, since it uses as much as digits as its factorization.

2221200031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2221200031 is about 47129.6088568535. The cubic root of 2221200031 is about 1304.7557625357.

Adding to 2221200031 its reverse (1300021222), we get a palindrome (3521221253).

The spelling of 2221200031 in words is "two billion, two hundred twenty-one million, two hundred thousand, thirty-one".