111211202112139 has 2 divisors, whose sum is σ = 111211202112140. Its totient is φ = 111211202112138.

The previous prime is 111211202112089. The next prime is 111211202112149. The reversal of 111211202112139 is 931211202112111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111211202112139 - 2²⁷ = 111211067894411 is a prime.

It is not a weakly prime, because it can be changed into another prime (111211202112149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605601056069 + 55605601056070.

It is an arithmetic number, because the mean of its divisors is an integer number (55605601056070).

Almost surely, 2^{111211202112139} is an apocalyptic number.

111211202112139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211202112139 is an equidigital number, since it uses as much as digits as its factorization.

111211202112139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 28.

Subtracting from 111211202112139 its sum of digits (28), we obtain a palindrome (111211202112111).

The spelling of 111211202112139 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred two million, one hundred twelve thousand, one hundred thirty-nine".