33223331993 has 2 divisors, whose sum is σ = 33223331994. Its totient is φ = 33223331992.

The previous prime is 33223331989. The next prime is 33223332071. The reversal of 33223331993 is 39913332233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22545623104 + 10677708889 = 150152^2 + 103333^2 .

It is a cyclic number.

It is not a de Polignac number, because 33223331993 - 2² = 33223331989 is a prime.

It is a super-2 number, since 2×33223331993² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33223331993.

It is not a weakly prime, because it can be changed into another prime (33223330993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16611665996 + 16611665997.

It is an arithmetic number, because the mean of its divisors is an integer number (16611665997).

Almost surely, 2^33223331993 is an apocalyptic number.

It is an amenable number.

33223331993 is a deficient number, since it is larger than the sum of its proper divisors (1).

33223331993 is an equidigital number, since it uses as much as digits as its factorization.

33223331993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 41.

The spelling of 33223331993 in words is "thirty-three billion, two hundred twenty-three million, three hundred thirty-one thousand, nine hundred ninety-three".