3221251145 has 8 divisors (see below), whose sum is σ = 4417715904. Its totient is φ = 2208857904.

The previous prime is 3221251133. The next prime is 3221251147. The reversal of 3221251145 is 5411521223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221251145 - 2⁴ = 3221251129 is a prime.

It is a super-2 number, since 2×3221251145² = 20752917878327622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3221251147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46017839 + ... + 46017908.

It is an arithmetic number, because the mean of its divisors is an integer number (552214488).

Almost surely, 2^3221251145 is an apocalyptic number.

3221251145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3221251145 is a deficient number, since it is larger than the sum of its proper divisors (1196464759).

3221251145 is an equidigital number, since it uses as much as digits as its factorization.

3221251145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92035759.

The product of its digits is 2400, while the sum is 26.

The square root of 3221251145 is about 56756.0670325208. The cubic root of 3221251145 is about 1476.8674834930.

Adding to 3221251145 its reverse (5411521223), we get a palindrome (8632772368).

The spelling of 3221251145 in words is "three billion, two hundred twenty-one million, two hundred fifty-one thousand, one hundred forty-five".