22222100210020 has 48 divisors (see below), whose sum is σ = 50264921931840. Its totient is φ = 8225169031296.

The previous prime is 22222100209987. The next prime is 22222100210071. The reversal of 22222100210020 is 2001200122222.

It is a junction number, because it is equal to n+sod(n) for n = 22222100209976 and 22222100210003.

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, 679974487 + ... + 680007166.

It is an arithmetic number, because the mean of its divisors is an integer number (1047185873580).

Almost surely, 2^{22222100210020} is an apocalyptic number.

22222100210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222100210020 is an abundant number, since it is smaller than the sum of its proper divisors (28042821721820).

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

22222100210020 is a wasteful number, since it uses less digits than its factorization.

22222100210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359981724 (or 1359981722 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22222100210020 its reverse (2001200122222), we get a palindrome (24223300332242).

The spelling of 22222100210020 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred million, two hundred ten thousand, twenty".