121100224123 has 4 divisors (see below), whose sum is σ = 124053888168. Its totient is φ = 118146560080.

The previous prime is 121100224109. The next prime is 121100224129. The reversal of 121100224123 is 321422001121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321422001121 = 13 ⋅24724769317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100224123 is a prime.

It is a super-2 number, since 2×121100224123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121100224123.

It is not an unprimeable number, because it can be changed into a prime (121100224129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476831961 + ... + 1476832042.

It is an arithmetic number, because the mean of its divisors is an integer number (31013472042).

Almost surely, 2^121100224123 is an apocalyptic number.

121100224123 is a deficient number, since it is larger than the sum of its proper divisors (2953664045).

121100224123 is an equidigital number, since it uses as much as digits as its factorization.

121100224123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953664044.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121100224123 its reverse (321422001121), we get a palindrome (442522225244).

The spelling of 121100224123 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty-four thousand, one hundred twenty-three".