201321023111 has 8 divisors (see below), whose sum is σ = 217779488640. Its totient is φ = 185001448032.

The previous prime is 201321023053. The next prime is 201321023117. The reversal of 201321023111 is 111320123102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201321023111 - 2¹⁸ = 201320760967 is a prime.

It is a super-2 number, since 2×201321023111² (a number of 23 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 201321023111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321023117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34719596 + ... + 34725393.

It is an arithmetic number, because the mean of its divisors is an integer number (27222436080).

Almost surely, 2^201321023111 is an apocalyptic number.

201321023111 is a deficient number, since it is larger than the sum of its proper divisors (16458465529).

201321023111 is a wasteful number, since it uses less digits than its factorization.

201321023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69445225.

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

Adding to 201321023111 its reverse (111320123102), we get a palindrome (312641146213).

Subtracting from 201321023111 its reverse (111320123102), we obtain a palindrome (90000900009).

The spelling of 201321023111 in words is "two hundred one billion, three hundred twenty-one million, twenty-three thousand, one hundred eleven".