216120533 has 2 divisors, whose sum is σ = 216120534. Its totient is φ = 216120532.

The previous prime is 216120503. The next prime is 216120539. The reversal of 216120533 is 335021612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158709604 + 57410929 = 12598^2 + 7577^2 .

It is a cyclic number.

It is not a de Polignac number, because 216120533 - 2⁶ = 216120469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216120499 and 216120508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216120539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108060266 + 108060267.

It is an arithmetic number, because the mean of its divisors is an integer number (108060267).

Almost surely, 2^216120533 is an apocalyptic number.

It is an amenable number.

216120533 is a deficient number, since it is larger than the sum of its proper divisors (1).

216120533 is an equidigital number, since it uses as much as digits as its factorization.

216120533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 216120533 is about 14701.0385007318. The cubic root of 216120533 is about 600.1115838767. Note that the first 3 decimals are identical.

The spelling of 216120533 in words is "two hundred sixteen million, one hundred twenty thousand, five hundred thirty-three".