33432040021 has 2 divisors, whose sum is σ = 33432040022. Its totient is φ = 33432040020.

The previous prime is 33432040001. The next prime is 33432040027. The reversal of 33432040021 is 12004023433.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32802280996 + 629759025 = 181114^2 + 25095^2 .

It is a cyclic number.

It is not a de Polignac number, because 33432040021 - 2¹⁵ = 33432007253 is a prime.

It is a super-2 number, since 2×33432040021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33432039974 and 33432040001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33432040027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16716020010 + 16716020011.

It is an arithmetic number, because the mean of its divisors is an integer number (16716020011).

Almost surely, 2^33432040021 is an apocalyptic number.

It is an amenable number.

33432040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

33432040021 is an equidigital number, since it uses as much as digits as its factorization.

33432040021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 33432040021 its reverse (12004023433), we get a palindrome (45436063454).

The spelling of 33432040021 in words is "thirty-three billion, four hundred thirty-two million, forty thousand, twenty-one".