2021221110 has 32 divisors (see below), whose sum is σ = 4875321600. Its totient is φ = 536282208.

The previous prime is 2021221109. The next prime is 2021221133. The reversal of 2021221110 is 111221202.

2021221110 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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, 163312 + ... + 175251.

It is an arithmetic number, because the mean of its divisors is an integer number (152353800).

Almost surely, 2^2021221110 is an apocalyptic number.

2021221110 is an abundant number, since it is smaller than the sum of its proper divisors (2854100490).

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

2021221110 is a wasteful number, since it uses less digits than its factorization.

2021221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338772.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2021221110 is about 44957.9927265442. The cubic root of 2021221110 is about 1264.3615352585.

Adding to 2021221110 its reverse (111221202), we get a palindrome (2132442312).

The spelling of 2021221110 in words is "two billion, twenty-one million, two hundred twenty-one thousand, one hundred ten".