1021321201311 has 24 divisors (see below), whose sum is σ = 1531019374560. Its totient is φ = 655288267200.

The previous prime is 1021321201301. The next prime is 1021321201319. The reversal of 1021321201311 is 1131021231201.

1021321201311 is a `hidden beast` number, since 10 + 2 + 1 + 321 + 20 + 1 + 311 = 666.

It is not a de Polignac number, because 1021321201311 - 2⁷ = 1021321201183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021321201319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6210000 + ... + 6372341.

It is an arithmetic number, because the mean of its divisors is an integer number (63792473940).

Almost surely, 2^{1021321201311} is an apocalyptic number.

1021321201311 is a deficient number, since it is larger than the sum of its proper divisors (509698173249).

1021321201311 is a wasteful number, since it uses less digits than its factorization.

1021321201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12582687 (or 12582684 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1021321201311 its reverse (1131021231201), we get a palindrome (2152342432512).

The spelling of 1021321201311 in words is "one trillion, twenty-one billion, three hundred twenty-one million, two hundred one thousand, three hundred eleven".