115221693 has 8 divisors (see below), whose sum is σ = 154988928. Its totient is φ = 76134464.

The previous prime is 115221683. The next prime is 115221703. The reversal of 115221693 is 396122511.

It is an interprime number because it is at equal distance from previous prime (115221683) and next prime (115221703).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115221693 - 2¹⁷ = 115090621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115221693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115221653) 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, 169605 + ... + 170282.

It is an arithmetic number, because the mean of its divisors is an integer number (19373616).

Almost surely, 2^115221693 is an apocalyptic number.

It is an amenable number.

115221693 is a deficient number, since it is larger than the sum of its proper divisors (39767235).

115221693 is a wasteful number, since it uses less digits than its factorization.

115221693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340003.

The product of its digits is 3240, while the sum is 30.

The square root of 115221693 is about 10734.1368074010. The cubic root of 115221693 is about 486.6066996753.

The spelling of 115221693 in words is "one hundred fifteen million, two hundred twenty-one thousand, six hundred ninety-three".