33221222212309 has 2 divisors, whose sum is σ = 33221222212310. Its totient is φ = 33221222212308.

The previous prime is 33221222212223. The next prime is 33221222212469. The reversal of 33221222212309 is 90321222212233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31280642268100 + 1940579944209 = 5592910^2 + 1393047^2 .

It is an emirp because it is prime and its reverse (90321222212233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33221222212309 - 2¹⁷ = 33221222081237 is a prime.

It is a super-2 number, since 2×33221222212309² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33221222212709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610611106154 + 16610611106155.

It is an arithmetic number, because the mean of its divisors is an integer number (16610611106155).

Almost surely, 2^{33221222212309} is an apocalyptic number.

It is an amenable number.

33221222212309 is a deficient number, since it is larger than the sum of its proper divisors (1).

33221222212309 is an equidigital number, since it uses as much as digits as its factorization.

33221222212309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 33221222212309 in words is "thirty-three trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, three hundred nine".