12221001210996 has 72 divisors (see below), whose sum is σ = 31900252477184. Its totient is φ = 3940804379520.

The previous prime is 12221001210959. The next prime is 12221001211031. The reversal of 12221001210996 is 69901210012221.

It is a super-2 number, since 2×12221001210996² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12221001210996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1009515 + ... + 5045901.

Almost surely, 2^{12221001210996} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12221001210996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15950126238592).

12221001210996 is an abundant number, since it is smaller than the sum of its proper divisors (19679251266188).

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

12221001210996 is a wasteful number, since it uses less digits than its factorization.

12221001210996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039141 (or 4039136 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 12221001210996 in words is "twelve trillion, two hundred twenty-one billion, one million, two hundred ten thousand, nine hundred ninety-six".