1215222341 has 4 divisors (see below), whose sum is σ = 1215354912. Its totient is φ = 1215089772.

The previous prime is 1215222317. The next prime is 1215222367. The reversal of 1215222341 is 1432225121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1432225121 = 157 ⋅9122453.

It is a cyclic number.

It is not a de Polignac number, because 1215222341 - 2¹⁰ = 1215221317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215222391) 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, 51425 + ... + 71238.

It is an arithmetic number, because the mean of its divisors is an integer number (303838728).

Almost surely, 2^1215222341 is an apocalyptic number.

It is an amenable number.

1215222341 is a deficient number, since it is larger than the sum of its proper divisors (132571).

1215222341 is an equidigital number, since it uses as much as digits as its factorization.

1215222341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132570.

The product of its digits is 960, while the sum is 23.

The square root of 1215222341 is about 34860.0393143783. The cubic root of 1215222341 is about 1067.1330773535.

Adding to 1215222341 its reverse (1432225121), we get a palindrome (2647447462).

The spelling of 1215222341 in words is "one billion, two hundred fifteen million, two hundred twenty-two thousand, three hundred forty-one".