23211020122237 has 2 divisors, whose sum is σ = 23211020122238. Its totient is φ = 23211020122236.

The previous prime is 23211020122207. The next prime is 23211020122249. The reversal of 23211020122237 is 73222102011232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12849149254041 + 10361870868196 = 3584571^2 + 3218986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23211020122237 is a prime.

It is a super-2 number, since 2×23211020122237² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23211020122207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605510061118 + 11605510061119.

It is an arithmetic number, because the mean of its divisors is an integer number (11605510061119).

Almost surely, 2^{23211020122237} is an apocalyptic number.

It is an amenable number.

23211020122237 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211020122237 is an equidigital number, since it uses as much as digits as its factorization.

23211020122237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 23211020122237 its reverse (73222102011232), we get a palindrome (96433122133469).

The spelling of 23211020122237 in words is "twenty-three trillion, two hundred eleven billion, twenty million, one hundred twenty-two thousand, two hundred thirty-seven".