12022201212 has 48 divisors (see below), whose sum is σ = 32065350912. Its totient is φ = 3434256000.

The previous prime is 12022201199. The next prime is 12022201231. The reversal of 12022201212 is 21210222021.

It is a junction number, because it is equal to n+sod(n) for n = 12022201191 and 12022201200.

It is a congruent number.

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, 577863 + ... + 598305.

It is an arithmetic number, because the mean of its divisors is an integer number (668028144).

Almost surely, 2^12022201212 is an apocalyptic number.

12022201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12022201212 is an abundant number, since it is smaller than the sum of its proper divisors (20043149700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12022201212 is a wasteful number, since it uses less digits than its factorization.

12022201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27458 (or 27456 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12022201212 its reverse (21210222021), we get a palindrome (33232423233).

The spelling of 12022201212 in words is "twelve billion, twenty-two million, two hundred one thousand, two hundred twelve".