110111100202021 has 2 divisors, whose sum is σ = 110111100202022. Its totient is φ = 110111100202020.

The previous prime is 110111100202001. The next prime is 110111100202027. The reversal of 110111100202021 is 120202001111011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110077048881121 + 34051320900 = 10491761^2 + 184530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110111100202021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110111100201992 and 110111100202010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110111100202027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055550101010 + 55055550101011.

It is an arithmetic number, because the mean of its divisors is an integer number (55055550101011).

Almost surely, 2^{110111100202021} is an apocalyptic number.

It is an amenable number.

110111100202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111100202021 is an equidigital number, since it uses as much as digits as its factorization.

110111100202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110111100202021 its reverse (120202001111011), we get a palindrome (230313101313032).

The spelling of 110111100202021 in words is "one hundred ten trillion, one hundred eleven billion, one hundred million, two hundred two thousand, twenty-one".