2225741021 has 4 divisors (see below), whose sum is σ = 2543704032. Its totient is φ = 1907778012.

The previous prime is 2225741009. The next prime is 2225741033. The reversal of 2225741021 is 1201475222.

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 an interprime number because it is at equal distance from previous prime (2225741009) and next prime (2225741033).

It is not a de Polignac number, because 2225741021 - 2¹⁴ = 2225724637 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 (2225741521) 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, 158981495 + ... + 158981508.

It is an arithmetic number, because the mean of its divisors is an integer number (635926008).

Almost surely, 2^2225741021 is an apocalyptic number.

It is an amenable number.

2225741021 is a deficient number, since it is larger than the sum of its proper divisors (317963011).

2225741021 is an equidigital number, since it uses as much as digits as its factorization.

2225741021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317963010.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2225741021 is about 47177.7598132849. The cubic root of 2225741021 is about 1305.6442987301.

The spelling of 2225741021 in words is "two billion, two hundred twenty-five million, seven hundred forty-one thousand, twenty-one".