2221659072 has 84 divisors (see below), whose sum is σ = 6396172120. Its totient is φ = 737275392.

The previous prime is 2221659071. The next prime is 2221659073. The reversal of 2221659072 is 2709561222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2221659071) and next prime (2221659073).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221659071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123483 + ... + 140325.

Almost surely, 2^2221659072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221659072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3198086060).

2221659072 is an abundant number, since it is smaller than the sum of its proper divisors (4174513048).

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

2221659072 is a wasteful number, since it uses less digits than its factorization.

2221659072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17090 (or 17077 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2221659072 is about 47134.4785905180. The cubic root of 2221659072 is about 1304.8456381476.

The spelling of 2221659072 in words is "two billion, two hundred twenty-one million, six hundred fifty-nine thousand, seventy-two".