2221885220 has 12 divisors (see below), whose sum is σ = 4665959004. Its totient is φ = 888754080.

The previous prime is 2221885219. The next prime is 2221885223. The reversal of 2221885220 is 225881222.

It can be written as a sum of positive squares in 2 ways, for example, as 1600480036 + 621405184 = 40006^2 + 24928^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2221885223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55547111 + ... + 55547150.

It is an arithmetic number, because the mean of its divisors is an integer number (388829917).

Almost surely, 2^2221885220 is an apocalyptic number.

2221885220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221885220 is an abundant number, since it is smaller than the sum of its proper divisors (2444073784).

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

2221885220 is a wasteful number, since it uses less digits than its factorization.

2221885220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111094270 (or 111094268 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 2221885220 is about 47136.8774952266. The cubic root of 2221885220 is about 1304.8899111000.

The spelling of 2221885220 in words is "two billion, two hundred twenty-one million, eight hundred eighty-five thousand, two hundred twenty".