110202200000021 has 2 divisors, whose sum is σ = 110202200000022. Its totient is φ = 110202200000020.

The previous prime is 110202200000017. The next prime is 110202200000033. The reversal of 110202200000021 is 120000002202011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81785091207121 + 28417108792900 = 9043511^2 + 5330770^2 .

It is a cyclic number.

It is not a de Polignac number, because 110202200000021 - 2² = 110202200000017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110202199999948 and 110202200000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110202200000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55101100000010 + 55101100000011.

It is an arithmetic number, because the mean of its divisors is an integer number (55101100000011).

Almost surely, 2^{110202200000021} is an apocalyptic number.

It is an amenable number.

110202200000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110202200000021 is an equidigital number, since it uses as much as digits as its factorization.

110202200000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 110202200000021 its reverse (120000002202011), we get a palindrome (230202202202032).

The spelling of 110202200000021 in words is "one hundred ten trillion, two hundred two billion, two hundred million, twenty-one", and thus it is an aban number.