121032100231 has 4 divisors (see below), whose sum is σ = 138322400272. Its totient is φ = 103741800192.

The previous prime is 121032100223. The next prime is 121032100247. The reversal of 121032100231 is 132001230121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132001230121 = 89 ⋅1483159889.

It is a cyclic number.

It is not a de Polignac number, because 121032100231 - 2³ = 121032100223 is a prime.

It is a super-2 number, since 2×121032100231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121032100531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645150010 + ... + 8645150023.

It is an arithmetic number, because the mean of its divisors is an integer number (34580600068).

Almost surely, 2^121032100231 is an apocalyptic number.

121032100231 is a deficient number, since it is larger than the sum of its proper divisors (17290300041).

121032100231 is an equidigital number, since it uses as much as digits as its factorization.

121032100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17290300040.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121032100231 its reverse (132001230121), we get a palindrome (253033330352).

The spelling of 121032100231 in words is "one hundred twenty-one billion, thirty-two million, one hundred thousand, two hundred thirty-one".