3388533021 has 10 divisors (see below), whose sum is σ = 5061882782. Its totient is φ = 2259021960.

The previous prime is 3388533019. The next prime is 3388533061. The reversal of 3388533021 is 1203358833.

It can be written as a sum of positive squares in only one way, i.e., 3134768121 + 253764900 = 55989^2 + 15930^2 .

It is not a de Polignac number, because 3388533021 - 2¹ = 3388533019 is a prime.

It is a super-2 number, since 2×3388533021² = 22964312068814772882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3388533011) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20916790 + ... + 20916951.

Almost surely, 2^3388533021 is an apocalyptic number.

It is an amenable number.

3388533021 is a deficient number, since it is larger than the sum of its proper divisors (1673349761).

3388533021 is an equidigital number, since it uses as much as digits as its factorization.

3388533021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41833753 (or 41833744 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 3388533021 is about 58211.1073679242. The cubic root of 3388533021 is about 1502.0022182257.

The spelling of 3388533021 in words is "three billion, three hundred eighty-eight million, five hundred thirty-three thousand, twenty-one".