3522121345 has 16 divisors (see below), whose sum is σ = 4243721040. Its totient is φ = 2806272000.

The previous prime is 3522121321. The next prime is 3522121367. The reversal of 3522121345 is 5431212253.

It can be written as a sum of positive squares in 8 ways, for example, as 143256961 + 3378864384 = 11969^2 + 58128^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3522121345 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2022175 + ... + 2023915.

It is an arithmetic number, because the mean of its divisors is an integer number (265232565).

Almost surely, 2^3522121345 is an apocalyptic number.

It is an amenable number.

3522121345 is a deficient number, since it is larger than the sum of its proper divisors (721599695).

3522121345 is a wasteful number, since it uses less digits than its factorization.

3522121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156.

The product of its digits is 7200, while the sum is 28.

The square root of 3522121345 is about 59347.4628354069. The cubic root of 3522121345 is about 1521.4865052938.

Adding to 3522121345 its reverse (5431212253), we get a palindrome (8953333598).

The spelling of 3522121345 in words is "three billion, five hundred twenty-two million, one hundred twenty-one thousand, three hundred forty-five".