122002042111989 has 16 divisors (see below), whose sum is σ = 176298231040512. Its totient is φ = 74599974790848.

The previous prime is 122002042111979. The next prime is 122002042112017. The reversal of 122002042111989 is 989111240200221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-122002042111989 is a prime.

It is a super-2 number, since 2×122002042111989² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122002042111989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002042111979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9962597349 + ... + 9962609594.

It is an arithmetic number, because the mean of its divisors is an integer number (11018639440032).

Almost surely, 2^{122002042111989} is an apocalyptic number.

It is an amenable number.

122002042111989 is a deficient number, since it is larger than the sum of its proper divisors (54296188928523).

122002042111989 is a wasteful number, since it uses less digits than its factorization.

122002042111989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19925207116.

The product of its (nonzero) digits is 41472, while the sum is 42.

The spelling of 122002042111989 in words is "one hundred twenty-two trillion, two billion, forty-two million, one hundred eleven thousand, nine hundred eighty-nine".