22221020210020 has 48 divisors (see below), whose sum is σ = 47376297577728. Its totient is φ = 8752847304960.

The previous prime is 22221020210009. The next prime is 22221020210153. The reversal of 22221020210020 is 2001202012222.

It is a junction number, because it is equal to n+sod(n) for n = 22221020209976 and 22221020210003.

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, 1308040 + ... + 6793600.

It is an arithmetic number, because the mean of its divisors is an integer number (987006199536).

Almost surely, 2^{22221020210020} is an apocalyptic number.

22221020210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221020210020 is an abundant number, since it is smaller than the sum of its proper divisors (25155277367708).

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

22221020210020 is a wasteful number, since it uses less digits than its factorization.

22221020210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488660 (or 5488658 counting only the distinct ones).

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

Adding to 22221020210020 its reverse (2001202012222), we get a palindrome (24222222222242).

The spelling of 22221020210020 in words is "twenty-two trillion, two hundred twenty-one billion, twenty million, two hundred ten thousand, twenty".