22110100020 has 72 divisors (see below), whose sum is σ = 68494293504. Its totient is φ = 5770577088.

The previous prime is 22110100009. The next prime is 22110100021. The reversal of 22110100020 is 2000101122.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 22110099975 and 22110100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110100021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1298284 + ... + 1315203.

It is an arithmetic number, because the mean of its divisors is an integer number (951309632).

Almost surely, 2^22110100020 is an apocalyptic number.

22110100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22110100020 is an abundant number, since it is smaller than the sum of its proper divisors (46384193484).

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

22110100020 is a wasteful number, since it uses less digits than its factorization.

22110100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613549 (or 2613544 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 22110100020 its reverse (2000101122), we get a palindrome (24110201142).

The spelling of 22110100020 in words is "twenty-two billion, one hundred ten million, one hundred thousand, twenty".