121100120431 has 8 divisors (see below), whose sum is σ = 127889041280. Its totient is φ = 114352722648.

The previous prime is 121100120389. The next prime is 121100120441. The reversal of 121100120431 is 134021001121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121100120431 - 2⁷ = 121100120303 is a prime.

It is a super-2 number, since 2×121100120431² (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 (121100120441) 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 7 ways as a sum of consecutive naturals, for example, 10374771 + ... + 10386436.

It is an arithmetic number, because the mean of its divisors is an integer number (15986130160).

Almost surely, 2^121100120431 is an apocalyptic number.

121100120431 is a deficient number, since it is larger than the sum of its proper divisors (6788920849).

121100120431 is a wasteful number, since it uses less digits than its factorization.

121100120431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20761533.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121100120431 its reverse (134021001121), we get a palindrome (255121121552).

The spelling of 121100120431 in words is "one hundred twenty-one billion, one hundred million, one hundred twenty thousand, four hundred thirty-one".