21103113033029 has 2 divisors, whose sum is σ = 21103113033030. Its totient is φ = 21103113033028.

The previous prime is 21103113033019. The next prime is 21103113033047. The reversal of 21103113033029 is 92033031130112.

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., 14511452172100 + 6591660860929 = 3809390^2 + 2567423^2 .

It is a cyclic number.

It is not a de Polignac number, because 21103113033029 - 2⁸ = 21103113032773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21103113032992 and 21103113033010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21103113033019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551556516514 + 10551556516515.

It is an arithmetic number, because the mean of its divisors is an integer number (10551556516515).

Almost surely, 2^{21103113033029} is an apocalyptic number.

It is an amenable number.

21103113033029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103113033029 is an equidigital number, since it uses as much as digits as its factorization.

21103113033029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The spelling of 21103113033029 in words is "twenty-one trillion, one hundred three billion, one hundred thirteen million, thirty-three thousand, twenty-nine".