1220143421244 has 24 divisors (see below), whose sum is σ = 3105819618048. Its totient is φ = 369740430640.

The previous prime is 1220143421197. The next prime is 1220143421261. The reversal of 1220143421244 is 4421243410221.

It is a congruent 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, 4621755252 + ... + 4621755515.

It is an arithmetic number, because the mean of its divisors is an integer number (129409150752).

Almost surely, 2^{1220143421244} is an apocalyptic number.

It is an amenable number.

1220143421244 is an abundant number, since it is smaller than the sum of its proper divisors (1885676196804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220143421244 is a wasteful number, since it uses less digits than its factorization.

1220143421244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9243510785 (or 9243510783 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 1220143421244 its reverse (4421243410221), we get a palindrome (5641386831465).

The spelling of 1220143421244 in words is "one trillion, two hundred twenty billion, one hundred forty-three million, four hundred twenty-one thousand, two hundred forty-four".