22143137 has 2 divisors, whose sum is σ = 22143138. Its totient is φ = 22143136.

The previous prime is 22143133. The next prime is 22143161. The reversal of 22143137 is 73134122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15178816 + 6964321 = 3896^2 + 2639^2 .

It is a cyclic number.

It is not a de Polignac number, because 22143137 - 2² = 22143133 is a prime.

It is not a weakly prime, because it can be changed into another prime (22143133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071568 + 11071569.

It is an arithmetic number, because the mean of its divisors is an integer number (11071569).

Almost surely, 2^22143137 is an apocalyptic number.

It is an amenable number.

22143137 is a deficient number, since it is larger than the sum of its proper divisors (1).

22143137 is an equidigital number, since it uses as much as digits as its factorization.

22143137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 22143137 is about 4705.6494769585. The cubic root of 22143137 is about 280.8103100424.

Adding to 22143137 its reverse (73134122), we get a palindrome (95277259).

The spelling of 22143137 in words is "twenty-two million, one hundred forty-three thousand, one hundred thirty-seven".