12222001212 has 48 divisors (see below), whose sum is σ = 28731655680. Its totient is φ = 4043552832.

The previous prime is 12222001177. The next prime is 12222001229. The reversal of 12222001212 is 21210022221.

It is a super-2 number, since 2×12222001212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12222001191 and 12222001200.

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, 1452714 + ... + 1461102.

It is an arithmetic number, because the mean of its divisors is an integer number (598576160).

Almost surely, 2^12222001212 is an apocalyptic number.

12222001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222001212 is an abundant number, since it is smaller than the sum of its proper divisors (16509654468).

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

12222001212 is a wasteful number, since it uses less digits than its factorization.

12222001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9290 (or 9288 counting only the distinct ones).

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

Adding to 12222001212 its reverse (21210022221), we get a palindrome (33432023433).

The spelling of 12222001212 in words is "twelve billion, two hundred twenty-two million, one thousand, two hundred twelve".