33031421011 has 2 divisors, whose sum is σ = 33031421012. Its totient is φ = 33031421010.

The previous prime is 33031420999. The next prime is 33031421023. The reversal of 33031421011 is 11012413033.

It is a balanced prime because it is at equal distance from previous prime (33031420999) and next prime (33031421023).

It is an emirp because it is prime and its reverse (11012413033) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33031421011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33031421011.

It is not a weakly prime, because it can be changed into another prime (33031421611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16515710505 + 16515710506.

It is an arithmetic number, because the mean of its divisors is an integer number (16515710506).

Almost surely, 2^33031421011 is an apocalyptic number.

33031421011 is a deficient number, since it is larger than the sum of its proper divisors (1).

33031421011 is an equidigital number, since it uses as much as digits as its factorization.

33031421011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 33031421011 its reverse (11012413033), we get a palindrome (44043834044).

The spelling of 33031421011 in words is "thirty-three billion, thirty-one million, four hundred twenty-one thousand, eleven".