12001221102212 has 48 divisors (see below), whose sum is σ = 21558426508080. Its totient is φ = 5843478970368.

The previous prime is 12001221102187. The next prime is 12001221102287. The reversal of 12001221102212 is 21220112210021.

It can be written as a sum of positive squares in 8 ways, for example, as 2521127893636 + 9480093208576 = 1587806^2 + 3078976^2 .

It is a super-2 number, since 2×12001221102212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21472964 + ... + 22024772.

It is an arithmetic number, because the mean of its divisors is an integer number (449133885585).

Almost surely, 2^{12001221102212} is an apocalyptic number.

It is an amenable number.

12001221102212 is a deficient number, since it is larger than the sum of its proper divisors (9557205405868).

12001221102212 is a wasteful number, since it uses less digits than its factorization.

12001221102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552632 (or 552630 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12001221102212 its reverse (21220112210021), we get a palindrome (33221333312233).

The spelling of 12001221102212 in words is "twelve trillion, one billion, two hundred twenty-one million, one hundred two thousand, two hundred twelve".