2245122661 has 4 divisors (see below), whose sum is σ = 2247540300. Its totient is φ = 2242705024.

The previous prime is 2245122653. The next prime is 2245122683. The reversal of 2245122661 is 1662215422.

2245122661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1177793761 + 1067328900 = 34319^2 + 32670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245122661 - 2³ = 2245122653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2245122961) 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, 1207426 + ... + 1209283.

It is an arithmetic number, because the mean of its divisors is an integer number (561885075).

Almost surely, 2^2245122661 is an apocalyptic number.

It is an amenable number.

2245122661 is a deficient number, since it is larger than the sum of its proper divisors (2417639).

2245122661 is an equidigital number, since it uses as much as digits as its factorization.

2245122661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417638.

The product of its digits is 11520, while the sum is 31.

The square root of 2245122661 is about 47382.7253437368. The cubic root of 2245122661 is about 1309.4231792230.

The spelling of 2245122661 in words is "two billion, two hundred forty-five million, one hundred twenty-two thousand, six hundred sixty-one".