20110100220020 has 48 divisors (see below), whose sum is σ = 42558127920000. Its totient is φ = 7981783205760.

The previous prime is 20110100219953. The next prime is 20110100220043. The reversal of 20110100220020 is 2002200101102.

It is a happy number.

It is a super-2 number, since 2×20110100220020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110100219983 and 20110100220010.

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, 24430106 + ... + 25239854.

It is an arithmetic number, because the mean of its divisors is an integer number (886627665000).

Almost surely, 2^{20110100220020} is an apocalyptic number.

20110100220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110100220020 is an abundant number, since it is smaller than the sum of its proper divisors (22448027699980).

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

20110100220020 is a wasteful number, since it uses less digits than its factorization.

20110100220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819368 (or 819366 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20110100220020 its reverse (2002200101102), we get a palindrome (22112300321122).

The spelling of 20110100220020 in words is "twenty trillion, one hundred ten billion, one hundred million, two hundred twenty thousand, twenty".