33130210021 has 2 divisors, whose sum is σ = 33130210022. Its totient is φ = 33130210020.

The previous prime is 33130209979. The next prime is 33130210033. The reversal of 33130210021 is 12001203133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33089429025 + 40780996 = 181905^2 + 6386^2 .

It is a cyclic number.

It is not a de Polignac number, because 33130210021 - 2¹³ = 33130201829 is a prime.

It is a super-2 number, since 2×33130210021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33130209977 and 33130210004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33130210051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565105010 + 16565105011.

It is an arithmetic number, because the mean of its divisors is an integer number (16565105011).

Almost surely, 2^33130210021 is an apocalyptic number.

It is an amenable number.

33130210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33130210021 is an equidigital number, since it uses as much as digits as its factorization.

33130210021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 33130210021 its reverse (12001203133), we get a palindrome (45131413154).

The spelling of 33130210021 in words is "thirty-three billion, one hundred thirty million, two hundred ten thousand, twenty-one".