2221033900 has 72 divisors (see below), whose sum is σ = 4925778480. Its totient is φ = 868957440.

The previous prime is 2221033811. The next prime is 2221033907. The reversal of 2221033900 is 93301222.

It is not an unprimeable number, because it can be changed into a prime (2221033907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3280362 + ... + 3281038.

It is an arithmetic number, because the mean of its divisors is an integer number (68413590).

Almost surely, 2^2221033900 is an apocalyptic number.

2221033900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221033900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2462889240).

2221033900 is an abundant number, since it is smaller than the sum of its proper divisors (2704744580).

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

2221033900 is a wasteful number, since it uses less digits than its factorization.

2221033900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2221033900 is about 47127.8463331394. The cubic root of 2221033900 is about 1304.7232327049.

The spelling of 2221033900 in words is "two billion, two hundred twenty-one million, thirty-three thousand, nine hundred".