1220242130311 has 4 divisors (see below), whose sum is σ = 1220244352272. Its totient is φ = 1220239908352.

The previous prime is 1220242130291. The next prime is 1220242130347. The reversal of 1220242130311 is 1130312420221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220242130311 - 2²³ = 1220233741703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220242130381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377790 + ... + 1607236.

It is an arithmetic number, because the mean of its divisors is an integer number (305061088068).

Almost surely, 2^{1220242130311} is an apocalyptic number.

1220242130311 is a deficient number, since it is larger than the sum of its proper divisors (2221961).

1220242130311 is an equidigital number, since it uses as much as digits as its factorization.

1220242130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221960.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1220242130311 its reverse (1130312420221), we get a palindrome (2350554550532).

The spelling of 1220242130311 in words is "one trillion, two hundred twenty billion, two hundred forty-two million, one hundred thirty thousand, three hundred eleven".