1220431140243 has 12 divisors (see below), whose sum is σ = 2014679977648. Its totient is φ = 697389222960.

The previous prime is 1220431140239. The next prime is 1220431140259. The reversal of 1220431140243 is 3420411340221.

1220431140243 is a `hidden beast` number, since 1 + 2 + 204 + 3 + 11 + 402 + 43 = 666.

It is not a de Polignac number, because 1220431140243 - 2² = 1220431140239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220431140223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9685961368 + ... + 9685961493.

Almost surely, 2^{1220431140243} is an apocalyptic number.

1220431140243 is a deficient number, since it is larger than the sum of its proper divisors (794248837405).

1220431140243 is a wasteful number, since it uses less digits than its factorization.

1220431140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19371922874 (or 19371922871 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1220431140243 its reverse (3420411340221), we get a palindrome (4640842480464).

The spelling of 1220431140243 in words is "one trillion, two hundred twenty billion, four hundred thirty-one million, one hundred forty thousand, two hundred forty-three".