122071528889 has 2 divisors, whose sum is σ = 122071528890. Its totient is φ = 122071528888.

The previous prime is 122071528879. The next prime is 122071528897. The reversal of 122071528889 is 988825170221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71967183289 + 50104345600 = 268267^2 + 223840^2 .

It is a cyclic number.

It is not a de Polignac number, because 122071528889 - 2³² = 117776561593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122071528889.

It is not a weakly prime, because it can be changed into another prime (122071528879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61035764444 + 61035764445.

It is an arithmetic number, because the mean of its divisors is an integer number (61035764445).

Almost surely, 2^122071528889 is an apocalyptic number.

It is an amenable number.

122071528889 is a deficient number, since it is larger than the sum of its proper divisors (1).

122071528889 is an equidigital number, since it uses as much as digits as its factorization.

122071528889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 53.

The spelling of 122071528889 in words is "one hundred twenty-two billion, seventy-one million, five hundred twenty-eight thousand, eight hundred eighty-nine".