122040002154 has 64 divisors (see below), whose sum is σ = 279552835584. Its totient is φ = 34793145216.

The previous prime is 122040002143. The next prime is 122040002197. The reversal of 122040002154 is 451200040221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122040002154.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66943687 + ... + 66945509.

It is an arithmetic number, because the mean of its divisors is an integer number (4368013056).

Almost surely, 2^122040002154 is an apocalyptic number.

122040002154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

122040002154 is an abundant number, since it is smaller than the sum of its proper divisors (157512833430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122040002154 is a wasteful number, since it uses less digits than its factorization.

122040002154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 122040002154 its reverse (451200040221), we get a palindrome (573240042375).

The spelling of 122040002154 in words is "one hundred twenty-two billion, forty million, two thousand, one hundred fifty-four".