22187539229 has 2 divisors, whose sum is σ = 22187539230. Its totient is φ = 22187539228.

The previous prime is 22187539223. The next prime is 22187539243. The reversal of 22187539229 is 92293578122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21207223129 + 980316100 = 145627^2 + 31310^2 .

It is a cyclic number.

It is not a de Polignac number, because 22187539229 - 2³² = 17892571933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22187539223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11093769614 + 11093769615.

It is an arithmetic number, because the mean of its divisors is an integer number (11093769615).

Almost surely, 2^22187539229 is an apocalyptic number.

It is an amenable number.

22187539229 is a deficient number, since it is larger than the sum of its proper divisors (1).

22187539229 is an equidigital number, since it uses as much as digits as its factorization.

22187539229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The spelling of 22187539229 in words is "twenty-two billion, one hundred eighty-seven million, five hundred thirty-nine thousand, two hundred twenty-nine".