22270961 has 4 divisors (see below), whose sum is σ = 22299300. Its totient is φ = 22242624.

The previous prime is 22270957. The next prime is 22270967. The reversal of 22270961 is 16907222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16907222 = 2 ⋅8453611.

It can be written as a sum of positive squares in 2 ways, for example, as 14205361 + 8065600 = 3769^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 22270961 - 2² = 22270957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22270967) 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, 12956 + ... + 14573.

It is an arithmetic number, because the mean of its divisors is an integer number (5574825).

Almost surely, 2^22270961 is an apocalyptic number.

It is an amenable number.

22270961 is a deficient number, since it is larger than the sum of its proper divisors (28339).

22270961 is an equidigital number, since it uses as much as digits as its factorization.

22270961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 22270961 is about 4719.2119045451. The cubic root of 22270961 is about 281.3496110702.

The spelling of 22270961 in words is "twenty-two million, two hundred seventy thousand, nine hundred sixty-one".