122100021139 has 2 divisors, whose sum is σ = 122100021140. Its totient is φ = 122100021138.

The previous prime is 122100021107. The next prime is 122100021143. The reversal of 122100021139 is 931120001221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122100021139 - 2⁵ = 122100021107 is a prime.

It is not a weakly prime, because it can be changed into another prime (122100021739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050010569 + 61050010570.

It is an arithmetic number, because the mean of its divisors is an integer number (61050010570).

Almost surely, 2^122100021139 is an apocalyptic number.

122100021139 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100021139 is an equidigital number, since it uses as much as digits as its factorization.

122100021139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 122100021139 in words is "one hundred twenty-two billion, one hundred million, twenty-one thousand, one hundred thirty-nine".