121449624081 has 4 divisors (see below), whose sum is σ = 161932832112. Its totient is φ = 80966416052.

The previous prime is 121449624053. The next prime is 121449624083. The reversal of 121449624081 is 180426944121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121449624081 - 2¹⁸ = 121449361937 is a prime.

It is a super-2 number, since 2×121449624081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121449624083) 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 3 ways as a sum of consecutive naturals, for example, 20241604011 + ... + 20241604016.

It is an arithmetic number, because the mean of its divisors is an integer number (40483208028).

Almost surely, 2^121449624081 is an apocalyptic number.

It is an amenable number.

121449624081 is a deficient number, since it is larger than the sum of its proper divisors (40483208031).

121449624081 is an equidigital number, since it uses as much as digits as its factorization.

121449624081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40483208030.

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 121449624081 in words is "one hundred twenty-one billion, four hundred forty-nine million, six hundred twenty-four thousand, eighty-one".