221021110220012 has 12 divisors (see below), whose sum is σ = 387574696336296. Its totient is φ = 110285482695360.

The previous prime is 221021110219969. The next prime is 221021110220023. The reversal of 221021110220012 is 210022011120122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56268101453 + ... + 56268105380.

It is an arithmetic number, because the mean of its divisors is an integer number (32297891361358).

Almost surely, 2^{221021110220012} is an apocalyptic number.

It is an amenable number.

221021110220012 is a deficient number, since it is larger than the sum of its proper divisors (166553586116284).

221021110220012 is a wasteful number, since it uses less digits than its factorization.

221021110220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112536207328 (or 112536207326 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221021110220012 its reverse (210022011120122), we get a palindrome (431043121340134).

The spelling of 221021110220012 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred ten million, two hundred twenty thousand, twelve".