2320221090 has 128 divisors (see below), whose sum is σ = 6275377152. Its totient is φ = 544158720.

The previous prime is 2320221089. The next prime is 2320221097. The reversal of 2320221090 is 901220232.

It is not an unprimeable number, because it can be changed into a prime (2320221097) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1602747 + ... + 1604193.

It is an arithmetic number, because the mean of its divisors is an integer number (49026384).

Almost surely, 2^2320221090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2320221090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3137688576).

2320221090 is an abundant number, since it is smaller than the sum of its proper divisors (3955156062).

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

2320221090 is a wasteful number, since it uses less digits than its factorization.

2320221090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 2320221090 is about 48168.6733261359. The cubic root of 2320221090 is about 1323.8632405147.

The spelling of 2320221090 in words is "two billion, three hundred twenty million, two hundred twenty-one thousand, ninety".