221001020110220 has 48 divisors (see below), whose sum is σ = 558318366600960. Its totient is φ = 71783789989824.

The previous prime is 221001020110181. The next prime is 221001020110229. The reversal of 221001020110220 is 22011020100122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 221001020110195 and 221001020110204.

It is not an unprimeable number, because it can be changed into a prime (221001020110229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41541542474 + ... + 41541547793.

It is an arithmetic number, because the mean of its divisors is an integer number (11631632637520).

Almost surely, 2^{221001020110220} is an apocalyptic number.

221001020110220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221001020110220 is an abundant number, since it is smaller than the sum of its proper divisors (337317346490740).

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

221001020110220 is a wasteful number, since it uses less digits than its factorization.

221001020110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83083090302 (or 83083090300 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221001020110220 its reverse (22011020100122), we get a palindrome (243012040210342).

The spelling of 221001020110220 in words is "two hundred twenty-one trillion, one billion, twenty million, one hundred ten thousand, two hundred twenty".