1241512213 has 4 divisors (see below), whose sum is σ = 1241582688. Its totient is φ = 1241441740.

The previous prime is 1241512169. The next prime is 1241512219. The reversal of 1241512213 is 3122151421.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1241512213 - 2¹³ = 1241504021 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 (1241512219) 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, 17070 + ... + 52672.

It is an arithmetic number, because the mean of its divisors is an integer number (310395672).

Almost surely, 2^1241512213 is an apocalyptic number.

It is an amenable number.

1241512213 is a deficient number, since it is larger than the sum of its proper divisors (70475).

1241512213 is an equidigital number, since it uses as much as digits as its factorization.

1241512213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70474.

The product of its digits is 480, while the sum is 22.

The square root of 1241512213 is about 35235.0991626248. The cubic root of 1241512213 is about 1074.7736211253.

Adding to 1241512213 its reverse (3122151421), we get a palindrome (4363663634).

The spelling of 1241512213 in words is "one billion, two hundred forty-one million, five hundred twelve thousand, two hundred thirteen".