221111000022220 has 48 divisors (see below), whose sum is σ = 578908800062208. Its totient is φ = 68917714292160.

The previous prime is 221111000022203. The next prime is 221111000022251. The reversal of 221111000022220 is 22220000111122.

It is a happy number.

221111000022220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221111000022194 and 221111000022203.

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, 71789284182 + ... + 71789287261.

It is an arithmetic number, because the mean of its divisors is an integer number (12060600001296).

Almost surely, 2^{221111000022220} is an apocalyptic number.

221111000022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221111000022220 is an abundant number, since it is smaller than the sum of its proper divisors (357797800039988).

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

221111000022220 is a wasteful number, since it uses less digits than its factorization.

221111000022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143578571470 (or 143578571468 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221111000022220 its reverse (22220000111122), we get a palindrome (243331000133342).

The spelling of 221111000022220 in words is "two hundred twenty-one trillion, one hundred eleven billion, twenty-two thousand, two hundred twenty".