3345552121 has 4 divisors (see below), whose sum is σ = 3350676132. Its totient is φ = 3340428112.

The previous prime is 3345552103. The next prime is 3345552127. The reversal of 3345552121 is 1212555433.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2339076496 + 1006475625 = 48364^2 + 31725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3345552121 is a prime.

It is a super-2 number, since 2×3345552121² = 22385437988655197282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3345552127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561026 + ... + 2562331.

It is an arithmetic number, because the mean of its divisors is an integer number (837669033).

Almost surely, 2^3345552121 is an apocalyptic number.

It is an amenable number.

3345552121 is a deficient number, since it is larger than the sum of its proper divisors (5124011).

3345552121 is an equidigital number, since it uses as much as digits as its factorization.

3345552121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124010.

The product of its digits is 18000, while the sum is 31.

The square root of 3345552121 is about 57840.7479291200. The cubic root of 3345552121 is about 1495.6246009239.

The spelling of 3345552121 in words is "three billion, three hundred forty-five million, five hundred fifty-two thousand, one hundred twenty-one".