1022609221 has 4 divisors (see below), whose sum is σ = 1044366912. Its totient is φ = 1000851532.

The previous prime is 1022609213. The next prime is 1022609227. The reversal of 1022609221 is 1229062201.

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 1022609221 - 2³ = 1022609213 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 (1022609227) 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, 10878775 + ... + 10878868.

It is an arithmetic number, because the mean of its divisors is an integer number (261091728).

Almost surely, 2^1022609221 is an apocalyptic number.

It is an amenable number.

1022609221 is a deficient number, since it is larger than the sum of its proper divisors (21757691).

1022609221 is an equidigital number, since it uses as much as digits as its factorization.

1022609221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21757690.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1022609221 is about 31978.2616944699. The cubic root of 1022609221 is about 1007.4803124058.

The spelling of 1022609221 in words is "one billion, twenty-two million, six hundred nine thousand, two hundred twenty-one".