22111212012031 has 2 divisors, whose sum is σ = 22111212012032. Its totient is φ = 22111212012030.

The previous prime is 22111212011953. The next prime is 22111212012047. The reversal of 22111212012031 is 13021021211122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22111212012031 - 2²³ = 22111203623423 is a prime.

It is a super-2 number, since 2×22111212012031² (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 (22111212012731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055606006015 + 11055606006016.

It is an arithmetic number, because the mean of its divisors is an integer number (11055606006016).

Almost surely, 2^{22111212012031} is an apocalyptic number.

22111212012031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111212012031 is an equidigital number, since it uses as much as digits as its factorization.

22111212012031 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 19.

Adding to 22111212012031 its reverse (13021021211122), we get a palindrome (35132233223153).

The spelling of 22111212012031 in words is "twenty-two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, thirty-one".