1220302202311 has 4 divisors (see below), whose sum is σ = 1253283342952. Its totient is φ = 1187321061672.

The previous prime is 1220302202263. The next prime is 1220302202351. The reversal of 1220302202311 is 1132022030221.

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 1220302202311 - 2²³ = 1220293813703 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 (1220302202351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16490570265 + ... + 16490570338.

It is an arithmetic number, because the mean of its divisors is an integer number (313320835738).

Almost surely, 2^{1220302202311} is an apocalyptic number.

1220302202311 is a deficient number, since it is larger than the sum of its proper divisors (32981140641).

1220302202311 is an equidigital number, since it uses as much as digits as its factorization.

1220302202311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32981140640.

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

Adding to 1220302202311 its reverse (1132022030221), we get a palindrome (2352324232532).

The spelling of 1220302202311 in words is "one trillion, two hundred twenty billion, three hundred two million, two hundred two thousand, three hundred eleven".