121072752681 has 8 divisors (see below), whose sum is σ = 162396986304. Its totient is φ = 80231843760.

The previous prime is 121072752649. The next prime is 121072752701. The reversal of 121072752681 is 186257270121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121072752681 - 2⁵ = 121072752649 is a prime.

It is a super-2 number, since 2×121072752681² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121072757681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120830590 + ... + 120831591.

It is an arithmetic number, because the mean of its divisors is an integer number (20299623288).

Almost surely, 2^121072752681 is an apocalyptic number.

It is an amenable number.

121072752681 is a deficient number, since it is larger than the sum of its proper divisors (41324233623).

121072752681 is a wasteful number, since it uses less digits than its factorization.

121072752681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241662351.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 121072752681 in words is "one hundred twenty-one billion, seventy-two million, seven hundred fifty-two thousand, six hundred eighty-one".