1311200021202 has 128 divisors (see below), whose sum is σ = 2830338588672. Its totient is φ = 403931404800.

The previous prime is 1311200021191. The next prime is 1311200021231. The reversal of 1311200021202 is 2021200021131.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 265261543 + ... + 265266485.

It is an arithmetic number, because the mean of its divisors is an integer number (22112020224).

Almost surely, 2^{1311200021202} is an apocalyptic number.

1311200021202 is an abundant number, since it is smaller than the sum of its proper divisors (1519138567470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311200021202 is a wasteful number, since it uses less digits than its factorization.

1311200021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1311200021202 its reverse (2021200021131), we get a palindrome (3332400042333).

The spelling of 1311200021202 in words is "one trillion, three hundred eleven billion, two hundred million, twenty-one thousand, two hundred two".