221012220010012 has 12 divisors (see below), whose sum is σ = 400108329328680. Its totient is φ = 106695554487536.

The previous prime is 221012220009941. The next prime is 221012220010033. The reversal of 221012220010012 is 210010022210122.

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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 952638879238 + ... + 952638879469.

It is an arithmetic number, because the mean of its divisors is an integer number (33342360777390).

Almost surely, 2^{221012220010012} is an apocalyptic number.

It is an amenable number.

221012220010012 is a deficient number, since it is larger than the sum of its proper divisors (179096109318668).

221012220010012 is a wasteful number, since it uses less digits than its factorization.

221012220010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905277758740 (or 1905277758738 counting only the distinct ones).

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

Adding to 221012220010012 its reverse (210010022210122), we get a palindrome (431022242220134).

The spelling of 221012220010012 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty million, ten thousand, twelve".