221421207126112 has 48 divisors (see below), whose sum is σ = 505214585309952. Its totient is φ = 93558256525440.

The previous prime is 221421207126047. The next prime is 221421207126127. The reversal of 221421207126112 is 211621702124122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6961163898 + ... + 6961195705.

It is an arithmetic number, because the mean of its divisors is an integer number (10525303860624).

Almost surely, 2^{221421207126112} is an apocalyptic number.

It is an amenable number.

221421207126112 is an abundant number, since it is smaller than the sum of its proper divisors (283793378183840).

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

221421207126112 is a wasteful number, since it uses less digits than its factorization.

221421207126112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13922359691 (or 13922359683 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 221421207126112 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred seven million, one hundred twenty-six thousand, one hundred twelve".