122101100100 has 108 divisors (see below), whose sum is σ = 437393296704. Its totient is φ = 27908821440.

The previous prime is 122101100059. The next prime is 122101100131. The reversal of 122101100100 is 1001101221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9684264 + ... + 9696863.

Almost surely, 2^122101100100 is an apocalyptic number.

122101100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122101100100 is an abundant number, since it is smaller than the sum of its proper divisors (315292196604).

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

122101100100 is a wasteful number, since it uses less digits than its factorization.

122101100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19381154 (or 19381144 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 122101100100 its reverse (1001101221), we get a palindrome (123102201321).

The spelling of 122101100100 in words is "one hundred twenty-two billion, one hundred one million, one hundred thousand, one hundred".