110121101202221 has 4 divisors (see below), whose sum is σ = 112198857828732. Its totient is φ = 108043344575712.

The previous prime is 110121101202143. The next prime is 110121101202263. The reversal of 110121101202221 is 122202101121011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59776556140900 + 50344545061321 = 7731530^2 + 7095389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110121101202221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110121101202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121101202821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038878313176 + ... + 1038878313281.

It is an arithmetic number, because the mean of its divisors is an integer number (28049714457183).

Almost surely, 2^{110121101202221} is an apocalyptic number.

It is an amenable number.

110121101202221 is a deficient number, since it is larger than the sum of its proper divisors (2077756626511).

110121101202221 is an equidigital number, since it uses as much as digits as its factorization.

110121101202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077756626510.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 110121101202221 its reverse (122202101121011), we get a palindrome (232323202323232).

The spelling of 110121101202221 in words is "one hundred ten trillion, one hundred twenty-one billion, one hundred one million, two hundred two thousand, two hundred twenty-one".