121890110039 has 2 divisors, whose sum is σ = 121890110040. Its totient is φ = 121890110038.

The previous prime is 121890110021. The next prime is 121890110051. The reversal of 121890110039 is 930011098121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121890110039 - 2³⁶ = 53170633303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121890109990 and 121890110008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121890110239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60945055019 + 60945055020.

It is an arithmetic number, because the mean of its divisors is an integer number (60945055020).

Almost surely, 2^121890110039 is an apocalyptic number.

121890110039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121890110039 is an equidigital number, since it uses as much as digits as its factorization.

121890110039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 35.

The spelling of 121890110039 in words is "one hundred twenty-one billion, eight hundred ninety million, one hundred ten thousand, thirty-nine".