12212220012 has 24 divisors (see below), whose sum is σ = 28505766912. Its totient is φ = 4069227600.

The previous prime is 12212219993. The next prime is 12212220061. The reversal of 12212220012 is 21002221221.

It is a junction number, because it is equal to n+sod(n) for n = 12212219973 and 12212220000.

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, 155164 + ... + 220227.

It is an arithmetic number, because the mean of its divisors is an integer number (1187740288).

Almost surely, 2^12212220012 is an apocalyptic number.

12212220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12212220012 is an abundant number, since it is smaller than the sum of its proper divisors (16293546900).

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

12212220012 is a wasteful number, since it uses less digits than its factorization.

12212220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378109 (or 378107 counting only the distinct ones).

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

Adding to 12212220012 its reverse (21002221221), we get a palindrome (33214441233).

The spelling of 12212220012 in words is "twelve billion, two hundred twelve million, two hundred twenty thousand, twelve".