221021121010010 has 32 divisors (see below), whose sum is σ = 399072831130944. Its totient is φ = 88134089472000.

The previous prime is 221021121009937. The next prime is 221021121010111. The reversal of 221021121010010 is 10010121120122.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37507505 + ... + 42998315.

It is an arithmetic number, because the mean of its divisors is an integer number (12471025972842).

Almost surely, 2^{221021121010010} is an apocalyptic number.

221021121010010 is a deficient number, since it is larger than the sum of its proper divisors (178051710120934).

221021121010010 is a wasteful number, since it uses less digits than its factorization.

221021121010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503310.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221021121010010 its reverse (10010121120122), we get a palindrome (231031242130132).

The spelling of 221021121010010 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty-one million, ten thousand, ten".