121404544723 has 16 divisors (see below), whose sum is σ = 151418732544. Its totient is φ = 94565180160.

The previous prime is 121404544717. The next prime is 121404544727. The reversal of 121404544723 is 327445404121.

It is a de Polignac number, because none of the positive numbers 2^k-121404544723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121404544727) 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 15 ways as a sum of consecutive naturals, for example, 92115 + ... + 501292.

It is an arithmetic number, because the mean of its divisors is an integer number (9463670784).

Almost surely, 2^121404544723 is an apocalyptic number.

121404544723 is a deficient number, since it is larger than the sum of its proper divisors (30014187821).

121404544723 is a wasteful number, since it uses less digits than its factorization.

121404544723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596082.

The product of its (nonzero) digits is 107520, while the sum is 37.

Adding to 121404544723 its reverse (327445404121), we get a palindrome (448849948844).

The spelling of 121404544723 in words is "one hundred twenty-one billion, four hundred four million, five hundred forty-four thousand, seven hundred twenty-three".