1220443311412 has 48 divisors (see below), whose sum is σ = 2318029342720. Its totient is φ = 558887361408.

The previous prime is 1220443311379. The next prime is 1220443311421. The reversal of 1220443311412 is 2141133440221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11969398 + ... + 12070930.

Almost surely, 2^{1220443311412} is an apocalyptic number.

It is an amenable number.

1220443311412 is a deficient number, since it is larger than the sum of its proper divisors (1097586031308).

1220443311412 is a wasteful number, since it uses less digits than its factorization.

1220443311412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103352 (or 103350 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1220443311412 its reverse (2141133440221), we get a palindrome (3361576751633).

The spelling of 1220443311412 in words is "one trillion, two hundred twenty billion, four hundred forty-three million, three hundred eleven thousand, four hundred twelve".