110201120122021 has 4 divisors (see below), whose sum is σ = 110201141126572. Its totient is φ = 110201099117472.

The previous prime is 110201120122001. The next prime is 110201120122043. The reversal of 110201120122021 is 120221021102011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 52218530085121 + 57982590036900 = 7226239^2 + 7614630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110201120122021 is a prime.

It is a super-2 number, since 2×110201120122021² (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 = 110201120121986 and 110201120122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110201120122001) 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, 4784785 + ... + 15597961.

It is an arithmetic number, because the mean of its divisors is an integer number (27550285281643).

Almost surely, 2^{110201120122021} is an apocalyptic number.

It is an amenable number.

110201120122021 is a deficient number, since it is larger than the sum of its proper divisors (21004551).

110201120122021 is a wasteful number, since it uses less digits than its factorization.

110201120122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21004550.

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

Adding to 110201120122021 its reverse (120221021102011), we get a palindrome (230422141224032).

The spelling of 110201120122021 in words is "one hundred ten trillion, two hundred one billion, one hundred twenty million, one hundred twenty-two thousand, twenty-one".