12212119957 has 2 divisors, whose sum is σ = 12212119958. Its totient is φ = 12212119956.

The previous prime is 12212119939. The next prime is 12212119961. The reversal of 12212119957 is 75991121221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11811559761 + 400560196 = 108681^2 + 20014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12212119957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212119937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106059978 + 6106059979.

It is an arithmetic number, because the mean of its divisors is an integer number (6106059979).

Almost surely, 2^12212119957 is an apocalyptic number.

It is an amenable number.

12212119957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212119957 is an equidigital number, since it uses as much as digits as its factorization.

12212119957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 40.

The spelling of 12212119957 in words is "twelve billion, two hundred twelve million, one hundred nineteen thousand, nine hundred fifty-seven".