122001220122100 has 144 divisors (see below), whose sum is σ = 300270500208000. Its totient is φ = 42619034304000.

The previous prime is 122001220122073. The next prime is 122001220122113. The reversal of 122001220122100 is 1221022100221.

It is a happy number.

It is a super-2 number, since 2×122001220122100² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3261171 + ... + 15957370.

It is an arithmetic number, because the mean of its divisors is an integer number (2085211807000).

Almost surely, 2^{122001220122100} is an apocalyptic number.

122001220122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122001220122100 is an abundant number, since it is smaller than the sum of its proper divisors (178269280085900).

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

122001220122100 is a wasteful number, since it uses less digits than its factorization.

122001220122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19218794 (or 19218787 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122001220122100 its reverse (1221022100221), we get a palindrome (123222242222321).

The spelling of 122001220122100 in words is "one hundred twenty-two trillion, one billion, two hundred twenty million, one hundred twenty-two thousand, one hundred".