22012031 has 2 divisors, whose sum is σ = 22012032. Its totient is φ = 22012030.

The previous prime is 22012019. The next prime is 22012037. The reversal of 22012031 is 13021022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22012031 - 2⁶ = 22011967 is a prime.

It is a super-2 number, since 2×22012031² = 969059017489922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006015 + 11006016.

It is an arithmetic number, because the mean of its divisors is an integer number (11006016).

Almost surely, 2^22012031 is an apocalyptic number.

22012031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012031 is an equidigital number, since it uses as much as digits as its factorization.

22012031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 22012031 is about 4691.6980934412. The cubic root of 22012031 is about 280.2550015381.

Adding to 22012031 its reverse (13021022), we get a palindrome (35033053).

The spelling of 22012031 in words is "twenty-two million, twelve thousand, thirty-one".