12210021220012 has 24 divisors (see below), whose sum is σ = 26640046298880. Its totient is φ = 4757151124560.

The previous prime is 12210021220003. The next prime is 12210021220043. The reversal of 12210021220012 is 21002212001221.

It is a happy number.

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, 19821462712 + ... + 19821463327.

It is an arithmetic number, because the mean of its divisors is an integer number (1110001929120).

Almost surely, 2^{12210021220012} is an apocalyptic number.

It is an amenable number.

12210021220012 is an abundant number, since it is smaller than the sum of its proper divisors (14430025078868).

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

12210021220012 is a wasteful number, since it uses less digits than its factorization.

12210021220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39642926061 (or 39642926059 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12210021220012 its reverse (21002212001221), we get a palindrome (33212233221233).

The spelling of 12210021220012 in words is "twelve trillion, two hundred ten billion, twenty-one million, two hundred twenty thousand, twelve".