201102101231 has 4 divisors (see below), whose sum is σ = 203934525264. Its totient is φ = 198269677200.

The previous prime is 201102101227. The next prime is 201102101243. The reversal of 201102101231 is 132101201102.

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

It is a cyclic number.

It is not a de Polignac number, because 201102101231 - 2² = 201102101227 is a prime.

It is a super-2 number, since 2×201102101231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102101201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416211910 + ... + 1416212051.

It is an arithmetic number, because the mean of its divisors is an integer number (50983631316).

Almost surely, 2^201102101231 is an apocalyptic number.

201102101231 is a deficient number, since it is larger than the sum of its proper divisors (2832424033).

201102101231 is an equidigital number, since it uses as much as digits as its factorization.

201102101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832424032.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201102101231 its reverse (132101201102), we get a palindrome (333203302333).

The spelling of 201102101231 in words is "two hundred one billion, one hundred two million, one hundred one thousand, two hundred thirty-one".