12120001121211 has 8 divisors (see below), whose sum is σ = 16161191797584. Its totient is φ = 8079405596160.

The previous prime is 12120001121209. The next prime is 12120001121237. The reversal of 12120001121211 is 11212110002121.

It is a happy number.

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

It is not a de Polignac number, because 12120001121211 - 2¹ = 12120001121209 is a prime.

It is a super-2 number, since 2×12120001121211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12120001128211) 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, 148740310 + ... + 148821771.

It is an arithmetic number, because the mean of its divisors is an integer number (2020148974698).

Almost surely, 2^{12120001121211} is an apocalyptic number.

12120001121211 is a deficient number, since it is larger than the sum of its proper divisors (4041190676373).

12120001121211 is a wasteful number, since it uses less digits than its factorization.

12120001121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297575661.

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

Adding to 12120001121211 its reverse (11212110002121), we get a palindrome (23332111123332).

The spelling of 12120001121211 in words is "twelve trillion, one hundred twenty billion, one million, one hundred twenty-one thousand, two hundred eleven".