33212212109 has 2 divisors, whose sum is σ = 33212212110. Its totient is φ = 33212212108.

The previous prime is 33212212081. The next prime is 33212212123. The reversal of 33212212109 is 90121221233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32979649609 + 232562500 = 181603^2 + 15250^2 .

It is a cyclic number.

It is not a de Polignac number, because 33212212109 - 2²⁴ = 33195434893 is a prime.

It is a super-2 number, since 2×33212212109² (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 (33212212199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606106054 + 16606106055.

It is an arithmetic number, because the mean of its divisors is an integer number (16606106055).

Almost surely, 2^33212212109 is an apocalyptic number.

It is an amenable number.

33212212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

33212212109 is an equidigital number, since it uses as much as digits as its factorization.

33212212109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 33212212109 in words is "thirty-three billion, two hundred twelve million, two hundred twelve thousand, one hundred nine".