121626156443 has 8 divisors (see below), whose sum is σ = 132685800816. Its totient is φ = 110566965600.

The previous prime is 121626156433. The next prime is 121626156469. The reversal of 121626156443 is 344651626121.

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

It is a cyclic number.

It is not a de Polignac number, because 121626156443 - 2²⁰ = 121625107867 is a prime.

It is a super-2 number, since 2×121626156443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121626156443.

It is not an unprimeable number, because it can be changed into a prime (121626156433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702905 + ... + 858677.

It is an arithmetic number, because the mean of its divisors is an integer number (16585725102).

Almost surely, 2^121626156443 is an apocalyptic number.

121626156443 is a deficient number, since it is larger than the sum of its proper divisors (11059644373).

121626156443 is a wasteful number, since it uses less digits than its factorization.

121626156443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226765.

The product of its digits is 207360, while the sum is 41.

The spelling of 121626156443 in words is "one hundred twenty-one billion, six hundred twenty-six million, one hundred fifty-six thousand, four hundred forty-three".