10000121099966 has 8 divisors (see below), whose sum is σ = 15005254429080. Its totient is φ = 4998369623608.

The previous prime is 10000121099951. The next prime is 10000121099971. The reversal of 10000121099966 is 66999012100001.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 845455796 + ... + 845467623.

It is an arithmetic number, because the mean of its divisors is an integer number (1875656803635).

Almost surely, 2^{10000121099966} is an apocalyptic number.

10000121099966 is a deficient number, since it is larger than the sum of its proper divisors (5005133329114).

10000121099966 is a wasteful number, since it uses less digits than its factorization.

10000121099966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690926378.

The product of its (nonzero) digits is 52488, while the sum is 44.

Adding to 10000121099966 its reverse (66999012100001), we get a palindrome (76999133199967).

The spelling of 10000121099966 in words is "ten trillion, one hundred twenty-one million, ninety-nine thousand, nine hundred sixty-six".