115141221 has 72 divisors (see below), whose sum is σ = 196467336. Its totient is φ = 64696320.

The previous prime is 115141217. The next prime is 115141241. The reversal of 115141221 is 122141511.

It can be written as a sum of positive squares in 12 ways, for example, as 71064900 + 44076321 = 8430^2 + 6639^2 .

It is not a de Polignac number, because 115141221 - 2² = 115141217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115141194 and 115141203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115141241) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1577241 + ... + 1577313.

It is an arithmetic number, because the mean of its divisors is an integer number (2728713).

Almost surely, 2^115141221 is an apocalyptic number.

It is an amenable number.

115141221 is a deficient number, since it is larger than the sum of its proper divisors (81326115).

115141221 is a wasteful number, since it uses less digits than its factorization.

115141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 167 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 115141221 is about 10730.3877376356. The cubic root of 115141221 is about 486.4933896060.

Adding to 115141221 its reverse (122141511), we get a palindrome (237282732).

The spelling of 115141221 in words is "one hundred fifteen million, one hundred forty-one thousand, two hundred twenty-one".