1244221213433 has 4 divisors (see below), whose sum is σ = 1357332232848. Its totient is φ = 1131110194020.

The previous prime is 1244221213421. The next prime is 1244221213517. The reversal of 1244221213433 is 3343121224421.

It is a happy number.

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 1244221213433 - 2⁶ = 1244221213369 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 1244221213433.

It is not an unprimeable number, because it can be changed into a prime (1244221219433) 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, 56555509691 + ... + 56555509712.

It is an arithmetic number, because the mean of its divisors is an integer number (339333058212).

Almost surely, 2^{1244221213433} is an apocalyptic number.

It is an amenable number.

1244221213433 is a deficient number, since it is larger than the sum of its proper divisors (113111019415).

1244221213433 is a wasteful number, since it uses less digits than its factorization.

1244221213433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113111019414.

The product of its digits is 27648, while the sum is 32.

Adding to 1244221213433 its reverse (3343121224421), we get a palindrome (4587342437854).

The spelling of 1244221213433 in words is "one trillion, two hundred forty-four billion, two hundred twenty-one million, two hundred thirteen thousand, four hundred thirty-three".