3120142221 has 32 divisors (see below), whose sum is σ = 5405649920. Its totient is φ = 1741470192.

The previous prime is 3120142217. The next prime is 3120142231. The reversal of 3120142221 is 1222410213.

It is a happy number.

It is not a de Polignac number, because 3120142221 - 2² = 3120142217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120142194 and 3120142203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3120142231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183835 + ... + 200088.

It is an arithmetic number, because the mean of its divisors is an integer number (168926560).

Almost surely, 2^3120142221 is an apocalyptic number.

It is an amenable number.

3120142221 is a deficient number, since it is larger than the sum of its proper divisors (2285507699).

3120142221 is a wasteful number, since it uses less digits than its factorization.

3120142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383982 (or 383976 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3120142221 is about 55858.2332427369. The cubic root of 3120142221 is about 1461.2509171899.

Adding to 3120142221 its reverse (1222410213), we get a palindrome (4342552434).

The spelling of 3120142221 in words is "three billion, one hundred twenty million, one hundred forty-two thousand, two hundred twenty-one".