122971552919 has 2 divisors, whose sum is σ = 122971552920. Its totient is φ = 122971552918.

The previous prime is 122971552889. The next prime is 122971552967. The reversal of 122971552919 is 919255179221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122971552919 is a prime.

It is a super-2 number, since 2×122971552919² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122971552999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61485776459 + 61485776460.

It is an arithmetic number, because the mean of its divisors is an integer number (61485776460).

Almost surely, 2^122971552919 is an apocalyptic number.

122971552919 is a deficient number, since it is larger than the sum of its proper divisors (1).

122971552919 is an equidigital number, since it uses as much as digits as its factorization.

122971552919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 53.

The spelling of 122971552919 in words is "one hundred twenty-two billion, nine hundred seventy-one million, five hundred fifty-two thousand, nine hundred nineteen".