283922221 has 4 divisors (see below), whose sum is σ = 309733344. Its totient is φ = 258111100.

The previous prime is 283922207. The next prime is 283922231. The reversal of 283922221 is 122229382.

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 283922221 - 2²¹ = 281825069 is a prime.

It is a super-2 number, since 2×283922221² = 161223655155145682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283922231) 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, 12905545 + ... + 12905566.

It is an arithmetic number, because the mean of its divisors is an integer number (77433336).

Almost surely, 2^283922221 is an apocalyptic number.

It is an amenable number.

283922221 is a deficient number, since it is larger than the sum of its proper divisors (25811123).

283922221 is a wasteful number, since it uses less digits than its factorization.

283922221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25811122.

The product of its digits is 6912, while the sum is 31.

The square root of 283922221 is about 16849.9917210662. The cubic root of 283922221 is about 657.2538335463.

The spelling of 283922221 in words is "two hundred eighty-three million, nine hundred twenty-two thousand, two hundred twenty-one".