20101100010020 has 48 divisors (see below), whose sum is σ = 43059818894400. Its totient is φ = 7880228087424.

The previous prime is 20101100009993. The next prime is 20101100010041. The reversal of 20101100010020 is 2001000110102.

It is a super-2 number, since 2×20101100010020² (a number of 27 digits) contains 22 as substring.

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, 37809170 + ... + 38337129.

It is an arithmetic number, because the mean of its divisors is an integer number (897079560300).

Almost surely, 2^{20101100010020} is an apocalyptic number.

20101100010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101100010020 is an abundant number, since it is smaller than the sum of its proper divisors (22958718884380).

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

20101100010020 is a wasteful number, since it uses less digits than its factorization.

20101100010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76146572 (or 76146570 counting only the distinct ones).

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

Adding to 20101100010020 its reverse (2001000110102), we get a palindrome (22102100120122).

The spelling of 20101100010020 in words is "twenty trillion, one hundred one billion, one hundred million, ten thousand, twenty".