110123400000821 has 2 divisors, whose sum is σ = 110123400000822. Its totient is φ = 110123400000820.

The previous prime is 110123400000709. The next prime is 110123400000829. The reversal of 110123400000821 is 128000004321011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58778135556100 + 51345264444721 = 7666690^2 + 7165561^2 .

It is a cyclic number.

It is not a de Polignac number, because 110123400000821 - 2³⁴ = 110106220131637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110123400000829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55061700000410 + 55061700000411.

It is an arithmetic number, because the mean of its divisors is an integer number (55061700000411).

Almost surely, 2^{110123400000821} is an apocalyptic number.

It is an amenable number.

110123400000821 is a deficient number, since it is larger than the sum of its proper divisors (1).

110123400000821 is an equidigital number, since it uses as much as digits as its factorization.

110123400000821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 110123400000821 its reverse (128000004321011), we get a palindrome (238123404321832).

The spelling of 110123400000821 in words is "one hundred ten trillion, one hundred twenty-three billion, four hundred million, eight hundred twenty-one", and thus it is an aban number.