121444123 has 4 divisors (see below), whose sum is σ = 121591800. Its totient is φ = 121296448.

The previous prime is 121444111. The next prime is 121444129. The reversal of 121444123 is 321444121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321444121 = 1823 ⋅176327.

It is a cyclic number.

It is not a de Polignac number, because 121444123 - 2²¹ = 119346971 is a prime.

It is a super-2 number, since 2×121444123² = 29497350022478258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121444094 and 121444103.

It is not an unprimeable number, because it can be changed into a prime (121444129) 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, 72598 + ... + 74251.

It is an arithmetic number, because the mean of its divisors is an integer number (30397950).

Almost surely, 2^121444123 is an apocalyptic number.

121444123 is a deficient number, since it is larger than the sum of its proper divisors (147677).

121444123 is an equidigital number, since it uses as much as digits as its factorization.

121444123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147676.

The product of its digits is 768, while the sum is 22.

The square root of 121444123 is about 11020.1689188506. The cubic root of 121444123 is about 495.2131490297.

Adding to 121444123 its reverse (321444121), we get a palindrome (442888244).

The spelling of 121444123 in words is "one hundred twenty-one million, four hundred forty-four thousand, one hundred twenty-three".