121440044123 has 2 divisors, whose sum is σ = 121440044124. Its totient is φ = 121440044122.

The previous prime is 121440044027. The next prime is 121440044161. The reversal of 121440044123 is 321440044121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121440044123 - 2¹² = 121440040027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 121440044092 and 121440044101.

It is not a weakly prime, because it can be changed into another prime (121440044923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60720022061 + 60720022062.

It is an arithmetic number, because the mean of its divisors is an integer number (60720022062).

Almost surely, 2^121440044123 is an apocalyptic number.

121440044123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121440044123 is an equidigital number, since it uses as much as digits as its factorization.

121440044123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121440044123 its reverse (321440044121), we get a palindrome (442880088244).

The spelling of 121440044123 in words is "one hundred twenty-one billion, four hundred forty million, forty-four thousand, one hundred twenty-three".