22201121237 has 2 divisors, whose sum is σ = 22201121238. Its totient is φ = 22201121236.

The previous prime is 22201121209. The next prime is 22201121251. The reversal of 22201121237 is 73212110222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15253732036 + 6947389201 = 123506^2 + 83351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201121237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201120237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100560618 + 11100560619.

It is an arithmetic number, because the mean of its divisors is an integer number (11100560619).

Almost surely, 2^22201121237 is an apocalyptic number.

It is an amenable number.

22201121237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201121237 is an equidigital number, since it uses as much as digits as its factorization.

22201121237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 22201121237 its reverse (73212110222), we get a palindrome (95413231459).

The spelling of 22201121237 in words is "twenty-two billion, two hundred one million, one hundred twenty-one thousand, two hundred thirty-seven".