121022123129 has 2 divisors, whose sum is σ = 121022123130. Its totient is φ = 121022123128.

The previous prime is 121022123099. The next prime is 121022123137. The reversal of 121022123129 is 921321220121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120427738729 + 594384400 = 347027^2 + 24380^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022123129 - 2⁸ = 121022122873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022123098 and 121022123107.

It is not a weakly prime, because it can be changed into another prime (121022123179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511061564 + 60511061565.

It is an arithmetic number, because the mean of its divisors is an integer number (60511061565).

Almost surely, 2^121022123129 is an apocalyptic number.

It is an amenable number.

121022123129 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022123129 is an equidigital number, since it uses as much as digits as its factorization.

121022123129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 121022123129 in words is "one hundred twenty-one billion, twenty-two million, one hundred twenty-three thousand, one hundred twenty-nine".