2170221492 has 12 divisors (see below), whose sum is σ = 5063850176. Its totient is φ = 723407160.

The previous prime is 2170221491. The next prime is 2170221497. The reversal of 2170221492 is 2941220712.

2170221492 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2170221492² = 9419722648677412128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170221491) 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, 90425884 + ... + 90425907.

Almost surely, 2^2170221492 is an apocalyptic number.

It is an amenable number.

2170221492 is an abundant number, since it is smaller than the sum of its proper divisors (2893628684).

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

2170221492 is a wasteful number, since it uses less digits than its factorization.

2170221492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180851798 (or 180851796 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2170221492 is about 46585.6361124328. The cubic root of 2170221492 is about 1294.6966372983.

The spelling of 2170221492 in words is "two billion, one hundred seventy million, two hundred twenty-one thousand, four hundred ninety-two".