3221142330 has 64 divisors (see below), whose sum is σ = 8850935808. Its totient is φ = 734944320.

The previous prime is 3221142329. The next prime is 3221142343. The reversal of 3221142330 is 332411223.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 3221142297 and 3221142306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106479 + ... + 133341.

It is an arithmetic number, because the mean of its divisors is an integer number (138295872).

Almost surely, 2^3221142330 is an apocalyptic number.

3221142330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221142330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4425467904).

3221142330 is an abundant number, since it is smaller than the sum of its proper divisors (5629793478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221142330 is a wasteful number, since it uses less digits than its factorization.

3221142330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27451.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3221142330 is about 56755.1084044423. The cubic root of 3221142330 is about 1476.8508536043.

Adding to 3221142330 its reverse (332411223), we get a palindrome (3553553553).

The spelling of 3221142330 in words is "three billion, two hundred twenty-one million, one hundred forty-two thousand, three hundred thirty".