12002211021 has 16 divisors (see below), whose sum is σ = 16957219968. Its totient is φ = 7525056000.

The previous prime is 12002211017. The next prime is 12002211059. The reversal of 12002211021 is 12011220021.

It is not a de Polignac number, because 12002211021 - 2² = 12002211017 is a prime.

It is a super-2 number, since 2×12002211021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12002210988 and 12002211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002216021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21705 + ... + 156446.

It is an arithmetic number, because the mean of its divisors is an integer number (1059826248).

Almost surely, 2^12002211021 is an apocalyptic number.

It is an amenable number.

12002211021 is a deficient number, since it is larger than the sum of its proper divisors (4955008947).

12002211021 is a wasteful number, since it uses less digits than its factorization.

12002211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179492.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12002211021 its reverse (12011220021), we get a palindrome (24013431042).

The spelling of 12002211021 in words is "twelve billion, two million, two hundred eleven thousand, twenty-one".