1010120100020 has 48 divisors (see below), whose sum is σ = 2150116550400. Its totient is φ = 398559657600.

The previous prime is 1010120100007. The next prime is 1010120100049. The reversal of 1010120100020 is 200010210101.

It is a junction number, because it is equal to n+sod(n) for n = 1010120099980 and 1010120100007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1389995 + ... + 1988045.

It is an arithmetic number, because the mean of its divisors is an integer number (44794094800).

Almost surely, 2^{1010120100020} is an apocalyptic number.

1010120100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010120100020 is an abundant number, since it is smaller than the sum of its proper divisors (1139996450380).

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

1010120100020 is a wasteful number, since it uses less digits than its factorization.

1010120100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599208 (or 599206 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1010120100020 its reverse (200010210101), we get a palindrome (1210130310121).

The spelling of 1010120100020 in words is "one trillion, ten billion, one hundred twenty million, one hundred thousand, twenty".