33224541997 has 2 divisors, whose sum is σ = 33224541998. Its totient is φ = 33224541996.

The previous prime is 33224541983. The next prime is 33224542069. The reversal of 33224541997 is 79914542233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32151717481 + 1072824516 = 179309^2 + 32754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33224541997 is a prime.

It is a super-2 number, since 2×33224541997² (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 33224541997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33224541907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16612270998 + 16612270999.

It is an arithmetic number, because the mean of its divisors is an integer number (16612270999).

Almost surely, 2^33224541997 is an apocalyptic number.

It is an amenable number.

33224541997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33224541997 is an equidigital number, since it uses as much as digits as its factorization.

33224541997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 49.

The spelling of 33224541997 in words is "thirty-three billion, two hundred twenty-four million, five hundred forty-one thousand, nine hundred ninety-seven".