221021200220012 has 24 divisors (see below), whose sum is σ = 388734990470400. Its totient is φ = 109954072190160.

The previous prime is 221021200219957. The next prime is 221021200220063. The reversal of 221021200220012 is 210022002120122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73937087 + ... + 76868297.

It is an arithmetic number, because the mean of its divisors is an integer number (16197291269600).

Almost surely, 2^{221021200220012} is an apocalyptic number.

It is an amenable number.

221021200220012 is a deficient number, since it is larger than the sum of its proper divisors (167713790250388).

221021200220012 is a wasteful number, since it uses less digits than its factorization.

221021200220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026141 (or 3026139 counting only the distinct ones).

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

Adding to 221021200220012 its reverse (210022002120122), we get a palindrome (431043202340134).

The spelling of 221021200220012 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred million, two hundred twenty thousand, twelve".