21110201033 has 2 divisors, whose sum is σ = 21110201034. Its totient is φ = 21110201032.

The previous prime is 21110201029. The next prime is 21110201089. The reversal of 21110201033 is 33010201112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16619592889 + 4490608144 = 128917^2 + 67012^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110201033 - 2² = 21110201029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21110200999 and 21110201017.

It is not a weakly prime, because it can be changed into another prime (21110201933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555100516 + 10555100517.

It is an arithmetic number, because the mean of its divisors is an integer number (10555100517).

Almost surely, 2^21110201033 is an apocalyptic number.

It is an amenable number.

21110201033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110201033 is an equidigital number, since it uses as much as digits as its factorization.

21110201033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21110201033 its reverse (33010201112), we get a palindrome (54120402145).

The spelling of 21110201033 in words is "twenty-one billion, one hundred ten million, two hundred one thousand, thirty-three".