22121202012031 has 2 divisors, whose sum is σ = 22121202012032. Its totient is φ = 22121202012030.

The previous prime is 22121202012023. The next prime is 22121202012101. The reversal of 22121202012031 is 13021020212122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121202012031 - 2³ = 22121202012023 is a prime.

It is a super-2 number, since 2×22121202012031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121202016031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060601006015 + 11060601006016.

It is an arithmetic number, because the mean of its divisors is an integer number (11060601006016).

Almost surely, 2^{22121202012031} is an apocalyptic number.

22121202012031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121202012031 is an equidigital number, since it uses as much as digits as its factorization.

22121202012031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22121202012031 its reverse (13021020212122), we get a palindrome (35142222224153).

The spelling of 22121202012031 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred two million, twelve thousand, thirty-one".