215112941 has 4 divisors (see below), whose sum is σ = 215168892. Its totient is φ = 215056992.

The previous prime is 215112913. The next prime is 215112949. The reversal of 215112941 is 149211512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17598025 + 197514916 = 4195^2 + 14054^2 .

It is a cyclic number.

It is not a de Polignac number, because 215112941 - 2¹⁰ = 215111917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215112941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215112949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21746 + ... + 30051.

It is an arithmetic number, because the mean of its divisors is an integer number (53792223).

Almost surely, 2^215112941 is an apocalyptic number.

It is an amenable number.

215112941 is a deficient number, since it is larger than the sum of its proper divisors (55951).

215112941 is an equidigital number, since it uses as much as digits as its factorization.

215112941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55950.

The product of its digits is 720, while the sum is 26.

The square root of 215112941 is about 14666.7290491098. The cubic root of 215112941 is about 599.1775221395.

The spelling of 215112941 in words is "two hundred fifteen million, one hundred twelve thousand, nine hundred forty-one".