121111221112139 has 2 divisors, whose sum is σ = 121111221112140. Its totient is φ = 121111221112138.

The previous prime is 121111221112097. The next prime is 121111221112169. The reversal of 121111221112139 is 931211122111121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121111221112139 is a prime.

It is not a weakly prime, because it can be changed into another prime (121111221112169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60555610556069 + 60555610556070.

It is an arithmetic number, because the mean of its divisors is an integer number (60555610556070).

Almost surely, 2^{121111221112139} is an apocalyptic number.

121111221112139 is a deficient number, since it is larger than the sum of its proper divisors (1).

121111221112139 is an equidigital number, since it uses as much as digits as its factorization.

121111221112139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 29.

The spelling of 121111221112139 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, one hundred thirty-nine".