22021130237 has 2 divisors, whose sum is σ = 22021130238. Its totient is φ = 22021130236.

The previous prime is 22021130233. The next prime is 22021130273. The reversal of 22021130237 is 73203112022.

Together with next prime (22021130273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20636471716 + 1384658521 = 143654^2 + 37211^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021130237 - 2² = 22021130233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021130233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010565118 + 11010565119.

It is an arithmetic number, because the mean of its divisors is an integer number (11010565119).

Almost surely, 2^22021130237 is an apocalyptic number.

It is an amenable number.

22021130237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021130237 is an equidigital number, since it uses as much as digits as its factorization.

22021130237 is an evil number, because the sum of its binary digits is even.

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

Adding to 22021130237 its reverse (73203112022), we get a palindrome (95224242259).

The spelling of 22021130237 in words is "twenty-two billion, twenty-one million, one hundred thirty thousand, two hundred thirty-seven".