122542011999 has 64 divisors (see below), whose sum is σ = 216462274560. Its totient is φ = 67644288000.

The previous prime is 122542011983. The next prime is 122542012007. The reversal of 122542011999 is 999110245221.

122542011999 is a `hidden beast` number, since 1 + 2 + 2 + 542 + 0 + 1 + 19 + 99 = 666.

It is not a de Polignac number, because 122542011999 - 2⁴ = 122542011983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122542011929) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234942 + ... + 547979.

It is an arithmetic number, because the mean of its divisors is an integer number (3382223040).

Almost surely, 2^122542011999 is an apocalyptic number.

122542011999 is a deficient number, since it is larger than the sum of its proper divisors (93920262561).

122542011999 is a wasteful number, since it uses less digits than its factorization.

122542011999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782989 (or 782983 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The spelling of 122542011999 in words is "one hundred twenty-two billion, five hundred forty-two million, eleven thousand, nine hundred ninety-nine".