12121166043669 has 32 divisors (see below), whose sum is σ = 16480186369920. Its totient is φ = 7923322478592.

The previous prime is 12121166043563. The next prime is 12121166043683. The reversal of 12121166043669 is 96634066112121.

It is a happy number.

12121166043669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12121166043669 - 2¹⁵ = 12121166010901 is a prime.

It is a super-2 number, since 2×12121166043669² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121166043769) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14633197 + ... + 15439325.

It is an arithmetic number, because the mean of its divisors is an integer number (515005824060).

Almost surely, 2^{12121166043669} is an apocalyptic number.

It is an amenable number.

12121166043669 is a deficient number, since it is larger than the sum of its proper divisors (4359020326251).

12121166043669 is a wasteful number, since it uses less digits than its factorization.

12121166043669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806709.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 12121166043669 in words is "twelve trillion, one hundred twenty-one billion, one hundred sixty-six million, forty-three thousand, six hundred sixty-nine".