115222221121 has 16 divisors (see below), whose sum is σ = 139464097920. Its totient is φ = 92928695040.

The previous prime is 115222221083. The next prime is 115222221137. The reversal of 115222221121 is 121122222511.

It is a cyclic number.

It is not a de Polignac number, because 115222221121 - 2¹⁵ = 115222188353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115222221092 and 115222221101.

It is not an unprimeable number, because it can be changed into a prime (115222227121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353326 + ... + 596056.

It is an arithmetic number, because the mean of its divisors is an integer number (8716506120).

Almost surely, 2^115222221121 is an apocalyptic number.

It is an amenable number.

115222221121 is a deficient number, since it is larger than the sum of its proper divisors (24241876799).

115222221121 is a wasteful number, since it uses less digits than its factorization.

115222221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246744.

The product of its digits is 320, while the sum is 22.

Adding to 115222221121 its reverse (121122222511), we get a palindrome (236344443632).

The spelling of 115222221121 in words is "one hundred fifteen billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-one".