22242947 has 2 divisors, whose sum is σ = 22242948. Its totient is φ = 22242946.

The previous prime is 22242943. The next prime is 22242949. The reversal of 22242947 is 74924222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22242947 - 2² = 22242943 is a prime.

Together with 22242949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22242943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121473 + 11121474.

It is an arithmetic number, because the mean of its divisors is an integer number (11121474).

Almost surely, 2^22242947 is an apocalyptic number.

22242947 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242947 is an equidigital number, since it uses as much as digits as its factorization.

22242947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 32.

The square root of 22242947 is about 4716.2428902676. The cubic root of 22242947 is about 281.2315943840.

The spelling of 22242947 in words is "twenty-two million, two hundred forty-two thousand, nine hundred forty-seven".