11311021201023 has 16 divisors (see below), whose sum is σ = 17639019417600. Its totient is φ = 7143802863480.

The previous prime is 11311021201013. The next prime is 11311021201091. The reversal of 11311021201023 is 32010212011311.

It is not a de Polignac number, because 11311021201023 - 2⁶ = 11311021200959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11311021200987 and 11311021201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311021201013) 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, 11024386623 + ... + 11024387648.

It is an arithmetic number, because the mean of its divisors is an integer number (1102438713600).

Almost surely, 2^{11311021201023} is an apocalyptic number.

11311021201023 is a deficient number, since it is larger than the sum of its proper divisors (6327998216577).

11311021201023 is a wasteful number, since it uses less digits than its factorization.

11311021201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22048774299 (or 22048774293 counting only the distinct ones).

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

Adding to 11311021201023 its reverse (32010212011311), we get a palindrome (43321233212334).

The spelling of 11311021201023 in words is "eleven trillion, three hundred eleven billion, twenty-one million, two hundred one thousand, twenty-three".