12220100384664 has 96 divisors (see below), whose sum is σ = 32464890810000. Its totient is φ = 3832356403200.

The previous prime is 12220100384663. The next prime is 12220100384729. The reversal of 12220100384664 is 46648300102221.

It is a super-2 number, since 2×12220100384664² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220100384663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18746614 + ... + 19387514.

Almost surely, 2^{12220100384664} 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 12220100384664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16232445405000).

12220100384664 is an abundant number, since it is smaller than the sum of its proper divisors (20244790425336).

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

12220100384664 is a wasteful number, since it uses less digits than its factorization.

12220100384664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643693 (or 643672 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

Adding to 12220100384664 its reverse (46648300102221), we get a palindrome (58868400486885).

The spelling of 12220100384664 in words is "twelve trillion, two hundred twenty billion, one hundred million, three hundred eighty-four thousand, six hundred sixty-four".