121526672981 has 8 divisors (see below), whose sum is σ = 138890378304. Its totient is φ = 104163655680.

The previous prime is 121526672963. The next prime is 121526673007. The reversal of 121526672981 is 189276625121.

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

It is a de Polignac number, because none of the positive numbers 2^k-121526672981 is a prime.

It is a super-2 number, since 2×121526672981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121526672581) 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, 288806 + ... + 571368.

It is an arithmetic number, because the mean of its divisors is an integer number (17361297288).

Almost surely, 2^121526672981 is an apocalyptic number.

It is an amenable number.

121526672981 is a deficient number, since it is larger than the sum of its proper divisors (17363705323).

121526672981 is an equidigital number, since it uses as much as digits as its factorization.

121526672981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344011.

The product of its digits is 725760, while the sum is 50.

The spelling of 121526672981 in words is "one hundred twenty-one billion, five hundred twenty-six million, six hundred seventy-two thousand, nine hundred eighty-one".