115212621 has 16 divisors (see below), whose sum is σ = 168264000. Its totient is φ = 69796608.

The previous prime is 115212577. The next prime is 115212631. The reversal of 115212621 is 126212511.

It is not a de Polignac number, because 115212621 - 2¹⁰ = 115211597 is a prime.

It is a super-3 number, since 3×115212621³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115212631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37471 + ... + 40428.

It is an arithmetic number, because the mean of its divisors is an integer number (10516500).

Almost surely, 2^115212621 is an apocalyptic number.

It is an amenable number.

115212621 is a deficient number, since it is larger than the sum of its proper divisors (53051379).

115212621 is a wasteful number, since it uses less digits than its factorization.

115212621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77948.

The product of its digits is 240, while the sum is 21.

The square root of 115212621 is about 10733.7142220203. The cubic root of 115212621 is about 486.5939283191.

The spelling of 115212621 in words is "one hundred fifteen million, two hundred twelve thousand, six hundred twenty-one".