220110110121021 has 16 divisors (see below), whose sum is σ = 296152674975360. Its totient is φ = 145404470382080.

The previous prime is 220110110121017. The next prime is 220110110121053. The reversal of 220110110121021 is 120121011011022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220110110121021 - 2² = 220110110121017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220110110121521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81296265 + ... + 83960126.

It is an arithmetic number, because the mean of its divisors is an integer number (18509542185960).

Almost surely, 2^{220110110121021} is an apocalyptic number.

It is an amenable number.

220110110121021 is a deficient number, since it is larger than the sum of its proper divisors (76042564854339).

220110110121021 is a wasteful number, since it uses less digits than its factorization.

220110110121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165260436.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 220110110121021 its reverse (120121011011022), we get a palindrome (340231121132043).

The spelling of 220110110121021 in words is "two hundred twenty trillion, one hundred ten billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".