12002121211 has 8 divisors (see below), whose sum is σ = 12561123744. Its totient is φ = 11446216320.

The previous prime is 12002121149. The next prime is 12002121217. The reversal of 12002121211 is 11212120021.

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 12002121211 - 2¹⁵ = 12002088443 is a prime.

It is a super-2 number, since 2×12002121211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002121191 and 12002121200.

It is not an unprimeable number, because it can be changed into a prime (12002121217) 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, 766480 + ... + 781981.

It is an arithmetic number, because the mean of its divisors is an integer number (1570140468).

Almost surely, 2^12002121211 is an apocalyptic number.

12002121211 is a deficient number, since it is larger than the sum of its proper divisors (559002533).

12002121211 is a wasteful number, since it uses less digits than its factorization.

12002121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548821.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12002121211 its reverse (11212120021), we get a palindrome (23214241232).

The spelling of 12002121211 in words is "twelve billion, two million, one hundred twenty-one thousand, two hundred eleven".