12122211919 has 2 divisors, whose sum is σ = 12122211920. Its totient is φ = 12122211918.

The previous prime is 12122211901. The next prime is 12122211949. The reversal of 12122211919 is 91911222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122211919 - 2⁷ = 12122211791 is a prime.

It is a super-2 number, since 2×12122211919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122211949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061105959 + 6061105960.

It is an arithmetic number, because the mean of its divisors is an integer number (6061105960).

Almost surely, 2^12122211919 is an apocalyptic number.

12122211919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122211919 is an equidigital number, since it uses as much as digits as its factorization.

12122211919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 31.

The spelling of 12122211919 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand, nine hundred nineteen".