222885961 has 4 divisors (see below), whose sum is σ = 222946432. Its totient is φ = 222825492.

The previous prime is 222885947. The next prime is 222885973. The reversal of 222885961 is 169588222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 169588222 = 2 ⋅84794111.

It is a cyclic number.

It is not a de Polignac number, because 222885961 - 2¹⁵ = 222853193 is a prime.

It is a super-2 number, since 2×222885961² = 99356303221787042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222885931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24321 + ... + 32206.

It is an arithmetic number, because the mean of its divisors is an integer number (55736608).

Almost surely, 2^222885961 is an apocalyptic number.

It is an amenable number.

222885961 is a deficient number, since it is larger than the sum of its proper divisors (60471).

222885961 is an equidigital number, since it uses as much as digits as its factorization.

222885961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60470.

The product of its digits is 138240, while the sum is 43.

The square root of 222885961 is about 14929.3657266476. The cubic root of 222885961 is about 606.3093115741.

The spelling of 222885961 in words is "two hundred twenty-two million, eight hundred eighty-five thousand, nine hundred sixty-one".