221000221120012 has 24 divisors (see below), whose sum is σ = 386855961705360. Its totient is φ = 110469947407680.

The previous prime is 221000221119989. The next prime is 221000221120057. The reversal of 221000221120012 is 210021122000122.

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, 1191739314 + ... + 1191924742.

It is an arithmetic number, because the mean of its divisors is an integer number (16118998404390).

Almost surely, 2^{221000221120012} is an apocalyptic number.

It is an amenable number.

221000221120012 is a deficient number, since it is larger than the sum of its proper divisors (165855740585348).

221000221120012 is a wasteful number, since it uses less digits than its factorization.

221000221120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265161 (or 265159 counting only the distinct ones).

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

Adding to 221000221120012 its reverse (210021122000122), we get a palindrome (431021343120134).

The spelling of 221000221120012 in words is "two hundred twenty-one trillion, two hundred twenty-one million, one hundred twenty thousand, twelve".