33221223197 has 2 divisors, whose sum is σ = 33221223198. Its totient is φ = 33221223196.

The previous prime is 33221223179. The next prime is 33221223257. The reversal of 33221223197 is 79132212233.

Together with previous prime (33221223179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32396040121 + 825183076 = 179989^2 + 28726^2 .

It is a cyclic number.

It is not a de Polignac number, because 33221223197 - 2¹⁰ = 33221222173 is a prime.

It is a super-2 number, since 2×33221223197² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33221223157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16610611598 + 16610611599.

It is an arithmetic number, because the mean of its divisors is an integer number (16610611599).

Almost surely, 2^33221223197 is an apocalyptic number.

It is an amenable number.

33221223197 is a deficient number, since it is larger than the sum of its proper divisors (1).

33221223197 is an equidigital number, since it uses as much as digits as its factorization.

33221223197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 35.

The spelling of 33221223197 in words is "thirty-three billion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred ninety-seven".