115222221136 has 20 divisors (see below), whose sum is σ = 243537876864. Its totient is φ = 52373736800.

The previous prime is 115222221083. The next prime is 115222221137. The reversal of 115222221136 is 631122222511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115222221137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327335680 + ... + 327336031.

Almost surely, 2^115222221136 is an apocalyptic number.

115222221136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

115222221136 is an abundant number, since it is smaller than the sum of its proper divisors (128315655728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115222221136 is a wasteful number, since it uses less digits than its factorization.

115222221136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654671730 (or 654671724 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

Adding to 115222221136 its reverse (631122222511), we get a palindrome (746344443647).

The spelling of 115222221136 in words is "one hundred fifteen billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred thirty-six".