121211200039 has 2 divisors, whose sum is σ = 121211200040. Its totient is φ = 121211200038.

The previous prime is 121211199983. The next prime is 121211200051. The reversal of 121211200039 is 930002112121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121211200039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121211199992 and 121211200019.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211200069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605600019 + 60605600020.

It is an arithmetic number, because the mean of its divisors is an integer number (60605600020).

Almost surely, 2^121211200039 is an apocalyptic number.

121211200039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211200039 is an equidigital number, since it uses as much as digits as its factorization.

121211200039 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 22.

The spelling of 121211200039 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred thousand, thirty-nine".