1201321311311 has 16 divisors (see below), whose sum is σ = 1322215031808. Its totient is φ = 1082375952000.

The previous prime is 1201321311301. The next prime is 1201321311353. The reversal of 1201321311311 is 1131131231021.

It is a cyclic number.

It is not a de Polignac number, because 1201321311311 - 2⁶ = 1201321311247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201321311301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38332130 + ... + 38363456.

It is an arithmetic number, because the mean of its divisors is an integer number (82638439488).

Almost surely, 2^{1201321311311} is an apocalyptic number.

1201321311311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201321311311 is a deficient number, since it is larger than the sum of its proper divisors (120893720497).

1201321311311 is a wasteful number, since it uses less digits than its factorization.

1201321311311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62302.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1201321311311 its reverse (1131131231021), we get a palindrome (2332452542332).

The spelling of 1201321311311 in words is "one trillion, two hundred one billion, three hundred twenty-one million, three hundred eleven thousand, three hundred eleven".