110221201001221 has 4 divisors (see below), whose sum is σ = 110222299152000. Its totient is φ = 110220102850444.

The previous prime is 110221201001183. The next prime is 110221201001227. The reversal of 110221201001221 is 122100102122011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110221201001221 is a prime.

It is a super-2 number, since 2×110221201001221² (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 = 110221201001195 and 110221201001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110221201001227) 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 3 ways as a sum of consecutive naturals, for example, 548924821 + ... + 549125578.

It is an arithmetic number, because the mean of its divisors is an integer number (27555574788000).

Almost surely, 2^{110221201001221} is an apocalyptic number.

It is an amenable number.

110221201001221 is a deficient number, since it is larger than the sum of its proper divisors (1098150779).

110221201001221 is a wasteful number, since it uses less digits than its factorization.

110221201001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098150778.

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

Adding to 110221201001221 its reverse (122100102122011), we get a palindrome (232321303123232).

The spelling of 110221201001221 in words is "one hundred ten trillion, two hundred twenty-one billion, two hundred one million, one thousand, two hundred twenty-one".