1213421230444 has 24 divisors (see below), whose sum is σ = 2132910507728. Its totient is φ = 604023929280.

The previous prime is 1213421230433. The next prime is 1213421230481. The reversal of 1213421230444 is 4440321243121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139774 + ... + 1564090.

Almost surely, 2^{1213421230444} is an apocalyptic number.

It is an amenable number.

1213421230444 is a deficient number, since it is larger than the sum of its proper divisors (919489277284).

1213421230444 is a wasteful number, since it uses less digits than its factorization.

1213421230444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425265 (or 1425263 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1213421230444 its reverse (4440321243121), we get a palindrome (5653742473565).

The spelling of 1213421230444 in words is "one trillion, two hundred thirteen billion, four hundred twenty-one million, two hundred thirty thousand, four hundred forty-four".