20101122101020 has 48 divisors (see below), whose sum is σ = 42906774290688. Its totient is φ = 7908193589760.

The previous prime is 20101122100999. The next prime is 20101122101089. The reversal of 20101122101020 is 2010122110102.

It is a super-2 number, since 2×20101122101020² (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 21680392 + ... + 22588528.

It is an arithmetic number, because the mean of its divisors is an integer number (893891131056).

Almost surely, 2^{20101122101020} is an apocalyptic number.

20101122101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101122101020 is an abundant number, since it is smaller than the sum of its proper divisors (22805652189668).

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

20101122101020 is a wasteful number, since it uses less digits than its factorization.

20101122101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926350 (or 926348 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20101122101020 its reverse (2010122110102), we get a palindrome (22111244211122).

The spelling of 20101122101020 in words is "twenty trillion, one hundred one billion, one hundred twenty-two million, one hundred one thousand, twenty".