33213031109 has 2 divisors, whose sum is σ = 33213031110. Its totient is φ = 33213031108.

The previous prime is 33213031081. The next prime is 33213031211. The reversal of 33213031109 is 90113031233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18348057025 + 14864974084 = 135455^2 + 121922^2 .

It is a cyclic number.

It is not a de Polignac number, because 33213031109 - 2⁸ = 33213030853 is a prime.

It is a super-2 number, since 2×33213031109² (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 (33213031009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16606515554 + 16606515555.

It is an arithmetic number, because the mean of its divisors is an integer number (16606515555).

Almost surely, 2^33213031109 is an apocalyptic number.

It is an amenable number.

33213031109 is a deficient number, since it is larger than the sum of its proper divisors (1).

33213031109 is an equidigital number, since it uses as much as digits as its factorization.

33213031109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

The spelling of 33213031109 in words is "thirty-three billion, two hundred thirteen million, thirty-one thousand, one hundred nine".