110221122020021 has 8 divisors (see below), whose sum is σ = 110698389583704. Its totient is φ = 109743890487040.

The previous prime is 110221122020003. The next prime is 110221122020033. The reversal of 110221122020021 is 120020221122011.

It can be written as a sum of positive squares in 4 ways, for example, as 40180202500 + 110180941817521 = 200450^2 + 10496711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 110221122020021 - 2²² = 110221117825717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110221122020041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2867210 + ... + 15121611.

It is an arithmetic number, because the mean of its divisors is an integer number (13837298697963).

Almost surely, 2^{110221122020021} is an apocalyptic number.

It is an amenable number.

110221122020021 is a deficient number, since it is larger than the sum of its proper divisors (477267563683).

110221122020021 is a wasteful number, since it uses less digits than its factorization.

110221122020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18015351.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 110221122020021 its reverse (120020221122011), we get a palindrome (230241343142032).

The spelling of 110221122020021 in words is "one hundred ten trillion, two hundred twenty-one billion, one hundred twenty-two million, twenty thousand, twenty-one".