121101210201231 has 24 divisors (see below), whose sum is σ = 195356684774160. Its totient is φ = 74523821660352.

The previous prime is 121101210201229. The next prime is 121101210201263. The reversal of 121101210201231 is 132102012101121.

It is a happy number.

121101210201231 is a `hidden beast` number, since 1 + 2 + 110 + 121 + 0 + 201 + 231 = 666.

It is not a de Polignac number, because 121101210201231 - 2¹ = 121101210201229 is a prime.

It is a super-2 number, since 2×121101210201231² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101210201031) 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 23 ways as a sum of consecutive naturals, for example, 19167646446 + ... + 19167652763.

It is an arithmetic number, because the mean of its divisors is an integer number (8139861865590).

Almost surely, 2^{121101210201231} is an apocalyptic number.

121101210201231 is a deficient number, since it is larger than the sum of its proper divisors (74255474572929).

121101210201231 is an equidigital number, since it uses as much as digits as its factorization.

121101210201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38335299237 (or 38335299225 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 121101210201231 its reverse (132102012101121), we get a palindrome (253203222302352).

The spelling of 121101210201231 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred ten million, two hundred one thousand, two hundred thirty-one".