201101022323231 has 4 divisors (see below), whose sum is σ = 201303949692864. Its totient is φ = 200898094953600.

The previous prime is 201101022323183. The next prime is 201101022323269. The reversal of 201101022323231 is 132323220101102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201101022323231 is a prime.

It is a super-2 number, since 2×201101022323231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201101022323197 and 201101022323206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101022323291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101463683330 + ... + 101463685311.

It is an arithmetic number, because the mean of its divisors is an integer number (50325987423216).

Almost surely, 2^{201101022323231} is an apocalyptic number.

201101022323231 is a deficient number, since it is larger than the sum of its proper divisors (202927369633).

201101022323231 is an equidigital number, since it uses as much as digits as its factorization.

201101022323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202927369632.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 201101022323231 its reverse (132323220101102), we get a palindrome (333424242424333).

The spelling of 201101022323231 in words is "two hundred one trillion, one hundred one billion, twenty-two million, three hundred twenty-three thousand, two hundred thirty-one".