122120100019999 has 12 divisors (see below), whose sum is σ = 122320675880784. Its totient is φ = 121919829719072.

The previous prime is 122120100019979. The next prime is 122120100020057. The reversal of 122120100019999 is 999910001021221.

It is not a de Polignac number, because 122120100019999 - 2⁷ = 122120100019871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120100019949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1616868774 + ... + 1616944300.

It is an arithmetic number, because the mean of its divisors is an integer number (10193389656732).

Almost surely, 2^{122120100019999} is an apocalyptic number.

122120100019999 is a deficient number, since it is larger than the sum of its proper divisors (200575860785).

122120100019999 is an frugal number, since it uses more digits than its factorization.

122120100019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79502 (or 78663 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 46.

The spelling of 122120100019999 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred million, nineteen thousand, nine hundred ninety-nine".