2221020031 has 2 divisors, whose sum is σ = 2221020032. Its totient is φ = 2221020030.

The previous prime is 2221020023. The next prime is 2221020059. The reversal of 2221020031 is 1300201222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221020031 - 2³ = 2221020023 is a prime.

It is a super-2 number, since 2×2221020031² = 9865859956206481922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221019993 and 2221020020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221020331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110510015 + 1110510016.

It is an arithmetic number, because the mean of its divisors is an integer number (1110510016).

Almost surely, 2^2221020031 is an apocalyptic number.

2221020031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221020031 is an equidigital number, since it uses as much as digits as its factorization.

2221020031 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 2221020031 is about 47127.6991906034. The cubic root of 2221020031 is about 1304.7205169660.

Adding to 2221020031 its reverse (1300201222), we get a palindrome (3521221253).

The spelling of 2221020031 in words is "two billion, two hundred twenty-one million, twenty thousand, thirty-one".