33221430409 has 2 divisors, whose sum is σ = 33221430410. Its totient is φ = 33221430408.

The previous prime is 33221430401. The next prime is 33221430421. The reversal of 33221430409 is 90403412233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24257128009 + 8964302400 = 155747^2 + 94680^2 .

It is an emirp because it is prime and its reverse (90403412233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33221430409 - 2³ = 33221430401 is a prime.

It is a super-2 number, since 2×33221430409² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33221430401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610715204 + 16610715205.

It is an arithmetic number, because the mean of its divisors is an integer number (16610715205).

Almost surely, 2^33221430409 is an apocalyptic number.

It is an amenable number.

33221430409 is a deficient number, since it is larger than the sum of its proper divisors (1).

33221430409 is an equidigital number, since it uses as much as digits as its factorization.

33221430409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 33221430409 in words is "thirty-three billion, two hundred twenty-one million, four hundred thirty thousand, four hundred nine".