12021210212 has 24 divisors (see below), whose sum is σ = 22984782912. Its totient is φ = 5455805600.

The previous prime is 12021210203. The next prime is 12021210251. The reversal of 12021210212 is 21201212021.

It is a super-2 number, since 2×12021210212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180464 + ... + 237927.

It is an arithmetic number, because the mean of its divisors is an integer number (957699288).

Almost surely, 2^12021210212 is an apocalyptic number.

It is an amenable number.

12021210212 is a deficient number, since it is larger than the sum of its proper divisors (10963572700).

12021210212 is a wasteful number, since it uses less digits than its factorization.

12021210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419059 (or 419057 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021210212 its reverse (21201212021), we get a palindrome (33222422233).

The spelling of 12021210212 in words is "twelve billion, twenty-one million, two hundred ten thousand, two hundred twelve".