3315224132221 has 4 divisors (see below), whose sum is σ = 3325061592892. Its totient is φ = 3305386671552.

The previous prime is 3315224132183. The next prime is 3315224132263. The reversal of 3315224132221 is 1222314225133.

It is a happy number.

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 964785595225 + 2350438536996 = 982235^2 + 1533114^2 .

It is a cyclic number.

It is not a de Polignac number, because 3315224132221 - 2²³ = 3315215743613 is a prime.

It is a super-2 number, since 2×3315224132221² (a number of 26 digits) 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 (3315224132291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4918729830 + ... + 4918730503.

It is an arithmetic number, because the mean of its divisors is an integer number (831265398223).

Almost surely, 2^{3315224132221} is an apocalyptic number.

It is an amenable number.

3315224132221 is a deficient number, since it is larger than the sum of its proper divisors (9837460671).

3315224132221 is an equidigital number, since it uses as much as digits as its factorization.

3315224132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9837460670.

The product of its digits is 17280, while the sum is 31.

Adding to 3315224132221 its reverse (1222314225133), we get a palindrome (4537538357354).

The spelling of 3315224132221 in words is "three trillion, three hundred fifteen billion, two hundred twenty-four million, one hundred thirty-two thousand, two hundred twenty-one".