33221233121 has 2 divisors, whose sum is σ = 33221233122. Its totient is φ = 33221233120.

The previous prime is 33221233093. The next prime is 33221233153. The reversal of 33221233121 is 12133212233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24012911521 + 9208321600 = 154961^2 + 95960^2 .

It is a cyclic number.

It is not a de Polignac number, because 33221233121 - 2³⁰ = 32147491297 is a prime.

It is a super-2 number, since 2×33221233121² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33221233021) 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, 16610616560 + 16610616561.

It is an arithmetic number, because the mean of its divisors is an integer number (16610616561).

Almost surely, 2^33221233121 is an apocalyptic number.

It is an amenable number.

33221233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

33221233121 is an equidigital number, since it uses as much as digits as its factorization.

33221233121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 23.

Adding to 33221233121 its reverse (12133212233), we get a palindrome (45354445354).

The spelling of 33221233121 in words is "thirty-three billion, two hundred twenty-one million, two hundred thirty-three thousand, one hundred twenty-one".