1302201021311 has 4 divisors (see below), whose sum is σ = 1304177047800. Its totient is φ = 1300224994824.

The previous prime is 1302201021301. The next prime is 1302201021367. The reversal of 1302201021311 is 1131201022031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1302201021311 is a prime.

It is a super-2 number, since 2×1302201021311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1302201021311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302201021301) 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, 988012256 + ... + 988013573.

It is an arithmetic number, because the mean of its divisors is an integer number (326044261950).

Almost surely, 2^{1302201021311} is an apocalyptic number.

1302201021311 is a deficient number, since it is larger than the sum of its proper divisors (1976026489).

1302201021311 is an equidigital number, since it uses as much as digits as its factorization.

1302201021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976026488.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1302201021311 its reverse (1131201022031), we get a palindrome (2433402043342).

The spelling of 1302201021311 in words is "one trillion, three hundred two billion, two hundred one million, twenty-one thousand, three hundred eleven".