121235212039 has 2 divisors, whose sum is σ = 121235212040. Its totient is φ = 121235212038.

The previous prime is 121235212001. The next prime is 121235212051. The reversal of 121235212039 is 930212532121.

It is a strong prime.

It is an emirp because it is prime and its reverse (930212532121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121235212039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121235212039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121235212069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60617606019 + 60617606020.

It is an arithmetic number, because the mean of its divisors is an integer number (60617606020).

Almost surely, 2^121235212039 is an apocalyptic number.

121235212039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121235212039 is an equidigital number, since it uses as much as digits as its factorization.

121235212039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 121235212039 in words is "one hundred twenty-one billion, two hundred thirty-five million, two hundred twelve thousand, thirty-nine".