122501012100 has 36 divisors (see below), whose sum is σ = 354436262544. Its totient is φ = 32666936480.

The previous prime is 122501012077. The next prime is 122501012141. The reversal of 122501012100 is 1210105221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 122501012100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204168054 + ... + 204168653.

Almost surely, 2^122501012100 is an apocalyptic number.

122501012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122501012100 is an abundant number, since it is smaller than the sum of its proper divisors (231935250444).

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

122501012100 is a wasteful number, since it uses less digits than its factorization.

122501012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408336724 (or 408336717 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 122501012100 its reverse (1210105221), we get a palindrome (123711117321).

The spelling of 122501012100 in words is "one hundred twenty-two billion, five hundred one million, twelve thousand, one hundred".