2221110100 has 36 divisors (see below), whose sum is σ = 5257975968. Its totient is φ = 807676000.

The previous prime is 2221110079. The next prime is 2221110119. The reversal of 2221110100 is 10111222.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1008496 + ... + 1010695.

It is an arithmetic number, because the mean of its divisors is an integer number (146054888).

Almost surely, 2^2221110100 is an apocalyptic number.

2221110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221110100 is an abundant number, since it is smaller than the sum of its proper divisors (3036865868).

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

2221110100 is a wasteful number, since it uses less digits than its factorization.

2221110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019216 (or 2019209 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2221110100 is about 47128.6547654397. The cubic root of 2221110100 is about 1304.7381534997.

Adding to 2221110100 its reverse (10111222), we get a palindrome (2231221322).

The spelling of 2221110100 in words is "two billion, two hundred twenty-one million, one hundred ten thousand, one hundred".