2221120090 has 64 divisors (see below), whose sum is σ = 4633645824. Its totient is φ = 750855168.

The previous prime is 2221120087. The next prime is 2221120093. The reversal of 2221120090 is 900211222.

It is an interprime number because it is at equal distance from previous prime (2221120087) and next prime (2221120093).

It is not an unprimeable number, because it can be changed into a prime (2221120093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1794952 + ... + 1796188.

It is an arithmetic number, because the mean of its divisors is an integer number (72400716).

Almost surely, 2^2221120090 is an apocalyptic number.

2221120090 is an abundant number, since it is smaller than the sum of its proper divisors (2412525734).

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

2221120090 is a wasteful number, since it uses less digits than its factorization.

2221120090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2221120090 is about 47128.7607517957. The cubic root of 2221120090 is about 1304.7401096258.

The spelling of 2221120090 in words is "two billion, two hundred twenty-one million, one hundred twenty thousand, ninety".