33130222921 has 2 divisors, whose sum is σ = 33130222922. Its totient is φ = 33130222920.

The previous prime is 33130222901. The next prime is 33130223003. The reversal of 33130222921 is 12922203133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33122180025 + 8042896 = 181995^2 + 2836^2 .

It is a cyclic number.

It is not a de Polignac number, because 33130222921 - 2⁷ = 33130222793 is a prime.

It is a super-2 number, since 2×33130222921² (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 33130222921.

It is not a weakly prime, because it can be changed into another prime (33130222901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16565111460 + 16565111461.

It is an arithmetic number, because the mean of its divisors is an integer number (16565111461).

Almost surely, 2^33130222921 is an apocalyptic number.

It is an amenable number.

33130222921 is a deficient number, since it is larger than the sum of its proper divisors (1).

33130222921 is an equidigital number, since it uses as much as digits as its factorization.

33130222921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 33130222921 in words is "thirty-three billion, one hundred thirty million, two hundred twenty-two thousand, nine hundred twenty-one".