33400105021 has 2 divisors, whose sum is σ = 33400105022. Its totient is φ = 33400105020.

The previous prime is 33400105007. The next prime is 33400105049. The reversal of 33400105021 is 12050100433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18810122500 + 14589982521 = 137150^2 + 120789^2 .

It is a cyclic number.

It is not a de Polignac number, because 33400105021 - 2⁵ = 33400104989 is a prime.

It is a super-2 number, since 2×33400105021² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33400105021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33400105001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16700052510 + 16700052511.

It is an arithmetic number, because the mean of its divisors is an integer number (16700052511).

Almost surely, 2^33400105021 is an apocalyptic number.

It is an amenable number.

33400105021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33400105021 is an equidigital number, since it uses as much as digits as its factorization.

33400105021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 33400105021 its reverse (12050100433), we get a palindrome (45450205454).

The spelling of 33400105021 in words is "thirty-three billion, four hundred million, one hundred five thousand, twenty-one".