12221111020000 has 60 divisors (see below), whose sum is σ = 30065766325056. Its totient is φ = 4888444400000.

The previous prime is 12221111019977. The next prime is 12221111020007. The reversal of 12221111020000 is 2011112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221111020007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 305507776 + ... + 305547775.

Almost surely, 2^{12221111020000} is an apocalyptic number.

12221111020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221111020000 is an abundant number, since it is smaller than the sum of its proper divisors (17844655305056).

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

12221111020000 is an frugal number, since it uses more digits than its factorization.

12221111020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611055581 (or 611055558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12221111020000 its reverse (2011112221), we get a palindrome (12223122132221).

The spelling of 12221111020000 in words is "twelve trillion, two hundred twenty-one billion, one hundred eleven million, twenty thousand".