220221100200020 has 48 divisors (see below), whose sum is σ = 485149543804800. Its totient is φ = 83853007539840.

The previous prime is 220221100199987. The next prime is 220221100200037. The reversal of 220221100200020 is 20002001122022.

It is a junction number, because it is equal to n+sod(n) for n = 220221100199968 and 220221100200004.

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, 2673842990 + ... + 2673925349.

It is an arithmetic number, because the mean of its divisors is an integer number (10107282162600).

Almost surely, 2^{220221100200020} is an apocalyptic number.

220221100200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220221100200020 is an abundant number, since it is smaller than the sum of its proper divisors (264928443604780).

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

220221100200020 is a wasteful number, since it uses less digits than its factorization.

220221100200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347768448 (or 5347768446 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220221100200020 its reverse (20002001122022), we get a palindrome (240223101322042).

The spelling of 220221100200020 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred million, two hundred thousand, twenty".