110221001000021 has 16 divisors (see below), whose sum is σ = 113809071403008. Its totient is φ = 106634969856000.

The previous prime is 110221000999973. The next prime is 110221001000027. The reversal of 110221001000021 is 120000100122011.

It is a cyclic number.

It is not a de Polignac number, because 110221001000021 - 2¹⁸ = 110221000737877 is a prime.

It is a super-2 number, since 2×110221001000021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110221000999966 and 110221001000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110221001000027) by changing a digit.

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, 1796767676 + ... + 1796829018.

It is an arithmetic number, because the mean of its divisors is an integer number (7113066962688).

Almost surely, 2^{110221001000021} is an apocalyptic number.

It is an amenable number.

110221001000021 is a deficient number, since it is larger than the sum of its proper divisors (3588070402987).

110221001000021 is an equidigital number, since it uses as much as digits as its factorization.

110221001000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77012.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 110221001000021 its reverse (120000100122011), we get a palindrome (230221101122032).

The spelling of 110221001000021 in words is "one hundred ten trillion, two hundred twenty-one billion, one million, twenty-one", and thus it is an aban number.