115221022 has 16 divisors (see below), whose sum is σ = 198038880. Its totient is φ = 49251168.

The previous prime is 115221011. The next prime is 115221023. The reversal of 115221022 is 220122511.

It is a happy number.

It is a super-4 number, since 4×115221022⁴ (a number of 33 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115220987 and 115221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115221023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (12377430).

Almost surely, 2^115221022 is an apocalyptic number.

115221022 is a deficient number, since it is larger than the sum of its proper divisors (82817858).

115221022 is a wasteful number, since it uses less digits than its factorization.

115221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21555.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 115221022 is about 10734.1055519312. The cubic root of 115221022 is about 486.6057550796.

Adding to 115221022 its reverse (220122511), we get a palindrome (335343533).

It can be divided in two parts, 11522 and 1022, that added together give a square (12544 = 112²).

The spelling of 115221022 in words is "one hundred fifteen million, two hundred twenty-one thousand, twenty-two".