12111021122001 has 16 divisors (see below), whose sum is σ = 16174230678720. Its totient is φ = 8060916568320.

The previous prime is 12111021121967. The next prime is 12111021122069. The reversal of 12111021122001 is 10022112011121.

It is a happy number.

It is not a de Polignac number, because 12111021122001 - 2⁹ = 12111021121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111021122071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12569085 + ... + 13498293.

It is an arithmetic number, because the mean of its divisors is an integer number (1010889417420).

Almost surely, 2^{12111021122001} is an apocalyptic number.

It is an amenable number.

12111021122001 is a deficient number, since it is larger than the sum of its proper divisors (4063209556719).

12111021122001 is an equidigital number, since it uses as much as digits as its factorization.

12111021122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936256.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12111021122001 its reverse (10022112011121), we get a palindrome (22133133133122).

The spelling of 12111021122001 in words is "twelve trillion, one hundred eleven billion, twenty-one million, one hundred twenty-two thousand, one".