121100210231 has 32 divisors (see below), whose sum is σ = 165664009728. Its totient is φ = 85461517440.

The previous prime is 121100210177. The next prime is 121100210233. The reversal of 121100210231 is 132012001121.

It is not a de Polignac number, because 121100210231 - 2²⁶ = 121033101367 is a prime.

It is a super-2 number, since 2×121100210231² (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 (121100210233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1088261 + ... + 1194366.

It is an arithmetic number, because the mean of its divisors is an integer number (5177000304).

Almost surely, 2^121100210231 is an apocalyptic number.

121100210231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121100210231 is a deficient number, since it is larger than the sum of its proper divisors (44563799497).

121100210231 is a wasteful number, since it uses less digits than its factorization.

121100210231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2282711.

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

Adding to 121100210231 its reverse (132012001121), we get a palindrome (253112211352).

The spelling of 121100210231 in words is "one hundred twenty-one billion, one hundred million, two hundred ten thousand, two hundred thirty-one".