221021211102010 has 32 divisors (see below), whose sum is σ = 434006106547392. Its totient is φ = 80371197770880.

The previous prime is 221021211101981. The next prime is 221021211102019. The reversal of 221021211102010 is 10201112120122.

It is not an unprimeable number, because it can be changed into a prime (221021211102019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 68443702 + ... + 71600158.

It is an arithmetic number, because the mean of its divisors is an integer number (13562690829606).

Almost surely, 2^{221021211102010} is an apocalyptic number.

221021211102010 is a deficient number, since it is larger than the sum of its proper divisors (212984895445382).

221021211102010 is a wasteful number, since it uses less digits than its factorization.

221021211102010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793038.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221021211102010 its reverse (10201112120122), we get a palindrome (231222323222132).

The spelling of 221021211102010 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred eleven million, one hundred two thousand, ten".