1226612513 has 4 divisors (see below), whose sum is σ = 1401842880. Its totient is φ = 1051382148.

The previous prime is 1226612459. The next prime is 1226612521. The reversal of 1226612513 is 3152166221.

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.

It is a cyclic number.

It is not a de Polignac number, because 1226612513 - 2¹² = 1226608417 is a prime.

It is a super-3 number, since 3×1226612513³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226612573) 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, 87615173 + ... + 87615186.

It is an arithmetic number, because the mean of its divisors is an integer number (350460720).

Almost surely, 2^1226612513 is an apocalyptic number.

It is an amenable number.

1226612513 is a deficient number, since it is larger than the sum of its proper divisors (175230367).

1226612513 is an equidigital number, since it uses as much as digits as its factorization.

1226612513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175230366.

The product of its digits is 4320, while the sum is 29.

The square root of 1226612513 is about 35023.0283242326. The cubic root of 1226612513 is about 1070.4567628017.

Adding to 1226612513 its reverse (3152166221), we get a palindrome (4378778734).

The spelling of 1226612513 in words is "one billion, two hundred twenty-six million, six hundred twelve thousand, five hundred thirteen".