100220102121020 has 96 divisors (see below), whose sum is σ = 248995250380800. Its totient is φ = 33153252620544.

The previous prime is 100220102121017. The next prime is 100220102121037. The reversal of 100220102121020 is 20121201022001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 100220102120986 and 100220102121004.

It is a congruent number.

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, 2734712 + ... + 14419391.

It is an arithmetic number, because the mean of its divisors is an integer number (2593700524800).

Almost surely, 2^{100220102121020} is an apocalyptic number.

100220102121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100220102121020 is an abundant number, since it is smaller than the sum of its proper divisors (148775148259780).

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

100220102121020 is a wasteful number, since it uses less digits than its factorization.

100220102121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17155587 (or 17155585 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 100220102121020 its reverse (20121201022001), we get a palindrome (120341303143021).

The spelling of 100220102121020 in words is "one hundred trillion, two hundred twenty billion, one hundred two million, one hundred twenty-one thousand, twenty".