121100423 has 4 divisors (see below), whose sum is σ = 122907960. Its totient is φ = 119292888.

The previous prime is 121100411. The next prime is 121100437. The reversal of 121100423 is 324001121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324001121 = 131 ⋅2473291.

It is a cyclic number.

It is not a de Polignac number, because 121100423 - 2⁴ = 121100407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100398 and 121100407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100923) 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, 903668 + ... + 903801.

It is an arithmetic number, because the mean of its divisors is an integer number (30726990).

Almost surely, 2^121100423 is an apocalyptic number.

121100423 is a deficient number, since it is larger than the sum of its proper divisors (1807537).

121100423 is an equidigital number, since it uses as much as digits as its factorization.

121100423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807536.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121100423 is about 11004.5637351055. The cubic root of 121100423 is about 494.7455387027.

Adding to 121100423 its reverse (324001121), we get a palindrome (445101544).

The spelling of 121100423 in words is "one hundred twenty-one million, one hundred thousand, four hundred twenty-three".