221012220120010 has 32 divisors (see below), whose sum is σ = 434050814332800. Its totient is φ = 80356379655360.

The previous prime is 221012220119897. The next prime is 221012220120023. The reversal of 221012220120010 is 10021022210122.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 145495830 + ... + 147007009.

It is an arithmetic number, because the mean of its divisors is an integer number (13564087947900).

Almost surely, 2^{221012220120010} is an apocalyptic number.

221012220120010 is a deficient number, since it is larger than the sum of its proper divisors (213038594212790).

221012220120010 is a wasteful number, since it uses less digits than its factorization.

221012220120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292509726.

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

Adding to 221012220120010 its reverse (10021022210122), we get a palindrome (231033242330132).

The spelling of 221012220120010 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty million, one hundred twenty thousand, ten".