12126961821169 has 8 divisors (see below), whose sum is σ = 13070178213120. Its totient is φ = 11185227311376.

The previous prime is 12126961821131. The next prime is 12126961821173. The reversal of 12126961821169 is 96112816962121.

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 12126961821169 - 2²⁵ = 12126928266737 is a prime.

It is a super-2 number, since 2×12126961821169² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12126961821769) 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, 370453537 + ... + 370486270.

It is an arithmetic number, because the mean of its divisors is an integer number (1633772276640).

Almost surely, 2^{12126961821169} is an apocalyptic number.

It is an amenable number.

12126961821169 is a deficient number, since it is larger than the sum of its proper divisors (943216391951).

12126961821169 is a wasteful number, since it uses less digits than its factorization.

12126961821169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740941079.

The product of its digits is 1119744, while the sum is 55.

The spelling of 12126961821169 in words is "twelve trillion, one hundred twenty-six billion, nine hundred sixty-one million, eight hundred twenty-one thousand, one hundred sixty-nine".