121011321029 has 2 divisors, whose sum is σ = 121011321030. Its totient is φ = 121011321028.

The previous prime is 121011321023. The next prime is 121011321037. The reversal of 121011321029 is 920123110121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118876696225 + 2134624804 = 344785^2 + 46202^2 .

It is a cyclic number.

It is not a de Polignac number, because 121011321029 - 2²⁸ = 120742885573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121011320995 and 121011321013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121011321023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505660514 + 60505660515.

It is an arithmetic number, because the mean of its divisors is an integer number (60505660515).

Almost surely, 2^121011321029 is an apocalyptic number.

It is an amenable number.

121011321029 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011321029 is an equidigital number, since it uses as much as digits as its factorization.

121011321029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 121011321029 in words is "one hundred twenty-one billion, eleven million, three hundred twenty-one thousand, twenty-nine".