221200202021012 has 48 divisors (see below), whose sum is σ = 395664863193600. Its totient is φ = 108183861377280.

The previous prime is 221200202020961. The next prime is 221200202021039. The reversal of 221200202021012 is 210120202002122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7690064 + ... + 22395032.

It is an arithmetic number, because the mean of its divisors is an integer number (8243017983200).

Almost surely, 2^{221200202021012} is an apocalyptic number.

It is an amenable number.

221200202021012 is a deficient number, since it is larger than the sum of its proper divisors (174464661172588).

221200202021012 is a wasteful number, since it uses less digits than its factorization.

221200202021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14705496 (or 14705494 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221200202021012 its reverse (210120202002122), we get a palindrome (431320404023134).

The spelling of 221200202021012 in words is "two hundred twenty-one trillion, two hundred billion, two hundred two million, twenty-one thousand, twelve".