22131123461 has 2 divisors, whose sum is σ = 22131123462. Its totient is φ = 22131123460.

The previous prime is 22131123407. The next prime is 22131123493. The reversal of 22131123461 is 16432113122.

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., 18696460225 + 3434663236 = 136735^2 + 58606^2 .

It is a cyclic number.

It is not a de Polignac number, because 22131123461 - 2³⁴ = 4951254277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22131123461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131123401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065561730 + 11065561731.

It is an arithmetic number, because the mean of its divisors is an integer number (11065561731).

Almost surely, 2^22131123461 is an apocalyptic number.

It is an amenable number.

22131123461 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131123461 is an equidigital number, since it uses as much as digits as its factorization.

22131123461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

Adding to 22131123461 its reverse (16432113122), we get a palindrome (38563236583).

The spelling of 22131123461 in words is "twenty-two billion, one hundred thirty-one million, one hundred twenty-three thousand, four hundred sixty-one".