122001220100 has 36 divisors (see below), whose sum is σ = 266495943168. Its totient is φ = 48477300000.

The previous prime is 122001220057. The next prime is 122001220139. The reversal of 122001220100 is 1022100221.

It is a happy number.

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, 4024676 + ... + 4054875.

It is an arithmetic number, because the mean of its divisors is an integer number (7402665088).

Almost surely, 2^122001220100 is an apocalyptic number.

122001220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122001220100 is an abundant number, since it is smaller than the sum of its proper divisors (144494723068).

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

122001220100 is a wasteful number, since it uses less digits than its factorization.

122001220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079716 (or 8079709 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122001220100 its reverse (1022100221), we get a palindrome (123023320321).

The spelling of 122001220100 in words is "one hundred twenty-two billion, one million, two hundred twenty thousand, one hundred".