21110221012010 has 32 divisors (see below), whose sum is σ = 43075106847360. Its totient is φ = 7384304029248.

The previous prime is 21110221011983. The next prime is 21110221012031. The reversal of 21110221012010 is 1021012201112.

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, 4273321622 + ... + 4273326561.

It is an arithmetic number, because the mean of its divisors is an integer number (1346097088980).

Almost surely, 2^{21110221012010} is an apocalyptic number.

21110221012010 is an abundant number, since it is smaller than the sum of its proper divisors (21964885835350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110221012010 is a wasteful number, since it uses less digits than its factorization.

21110221012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8546648222.

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

Adding to 21110221012010 its reverse (1021012201112), we get a palindrome (22131233213122).

The spelling of 21110221012010 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty-one million, twelve thousand, ten".