1220232002311 has 4 divisors (see below), whose sum is σ = 1394550859792. Its totient is φ = 1045913144832.

The previous prime is 1220232002303. The next prime is 1220232002333. The reversal of 1220232002311 is 1132002320221.

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 1220232002311 - 2³ = 1220232002303 is a prime.

It is a super-2 number, since 2×1220232002311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220232002351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87159428730 + ... + 87159428743.

It is an arithmetic number, because the mean of its divisors is an integer number (348637714948).

Almost surely, 2^{1220232002311} is an apocalyptic number.

1220232002311 is a deficient number, since it is larger than the sum of its proper divisors (174318857481).

1220232002311 is an equidigital number, since it uses as much as digits as its factorization.

1220232002311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174318857480.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1220232002311 its reverse (1132002320221), we get a palindrome (2352234322532).

The spelling of 1220232002311 in words is "one trillion, two hundred twenty billion, two hundred thirty-two million, two thousand, three hundred eleven".