33102199981 has 2 divisors, whose sum is σ = 33102199982. Its totient is φ = 33102199980.

The previous prime is 33102199943. The next prime is 33102200003. The reversal of 33102199981 is 18999120133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20194967881 + 12907232100 = 142109^2 + 113610^2 .

It is a cyclic number.

It is not a de Polignac number, because 33102199981 - 2³¹ = 30954716333 is a prime.

It is a super-2 number, since 2×33102199981² (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 (33102190981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16551099990 + 16551099991.

It is an arithmetic number, because the mean of its divisors is an integer number (16551099991).

Almost surely, 2^33102199981 is an apocalyptic number.

It is an amenable number.

33102199981 is a deficient number, since it is larger than the sum of its proper divisors (1).

33102199981 is an equidigital number, since it uses as much as digits as its factorization.

33102199981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 33102199981 in words is "thirty-three billion, one hundred two million, one hundred ninety-nine thousand, nine hundred eighty-one".