2221429880 has 64 divisors (see below), whose sum is σ = 5154019200. Its totient is φ = 861194880.

The previous prime is 2221429879. The next prime is 2221429909. The reversal of 2221429880 is 889241222.

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, 220391 + ... + 230249.

It is an arithmetic number, because the mean of its divisors is an integer number (80531550).

Almost surely, 2^2221429880 is an apocalyptic number.

2221429880 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 2221429880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577009600).

2221429880 is an abundant number, since it is smaller than the sum of its proper divisors (2932589320).

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

2221429880 is a wasteful number, since it uses less digits than its factorization.

2221429880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10044 (or 10040 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 2221429880 is about 47132.0472714691. The cubic root of 2221429880 is about 1304.8007662063.

The spelling of 2221429880 in words is "two billion, two hundred twenty-one million, four hundred twenty-nine thousand, eight hundred eighty".