2229746021 has 4 divisors (see below), whose sum is σ = 2301673344. Its totient is φ = 2157818700.

The previous prime is 2229745943. The next prime is 2229746023. The reversal of 2229746021 is 1206479222.

2229746021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2229746021 - 2²² = 2225551717 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 (2229746023) 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, 35963615 + ... + 35963676.

It is an arithmetic number, because the mean of its divisors is an integer number (575418336).

Almost surely, 2^2229746021 is an apocalyptic number.

It is an amenable number.

2229746021 is a deficient number, since it is larger than the sum of its proper divisors (71927323).

2229746021 is an equidigital number, since it uses as much as digits as its factorization.

2229746021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71927322.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2229746021 is about 47220.1865837059. The cubic root of 2229746021 is about 1306.4269552446.

The spelling of 2229746021 in words is "two billion, two hundred twenty-nine million, seven hundred forty-six thousand, twenty-one".