121752711723 has 16 divisors (see below), whose sum is σ = 172184119200. Its totient is φ = 76261441536.

The previous prime is 121752711679. The next prime is 121752711727. The reversal of 121752711723 is 327117257121.

It is not a de Polignac number, because 121752711723 - 2¹³ = 121752703531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121752711727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039298 + ... + 2098151.

It is an arithmetic number, because the mean of its divisors is an integer number (10761507450).

Almost surely, 2^121752711723 is an apocalyptic number.

121752711723 is a deficient number, since it is larger than the sum of its proper divisors (50431407477).

121752711723 is a wasteful number, since it uses less digits than its factorization.

121752711723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138046.

The product of its digits is 41160, while the sum is 39.

Adding to 121752711723 its reverse (327117257121), we get a palindrome (448869968844).

It can be divided in two parts, 12 and 1752711723, that multiplied together give a square (21032540676 = 145026²).

The spelling of 121752711723 in words is "one hundred twenty-one billion, seven hundred fifty-two million, seven hundred eleven thousand, seven hundred twenty-three".