2143222506 has 12 divisors (see below), whose sum is σ = 4643648802. Its totient is φ = 714407496.

The previous prime is 2143222493. The next prime is 2143222507. The reversal of 2143222506 is 6052223412.

It is a happy number.

2143222506 is a `hidden beast` number, since 2 + 1 + 432 + 225 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2141375625 + 1846881 = 46275^2 + 1359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2143222506.

It is not an unprimeable number, because it can be changed into a prime (2143222507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59533941 + ... + 59533976.

Almost surely, 2^2143222506 is an apocalyptic number.

2143222506 is an abundant number, since it is smaller than the sum of its proper divisors (2500426296).

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

2143222506 is a wasteful number, since it uses less digits than its factorization.

2143222506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119067925 (or 119067922 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2143222506 is about 46294.9511934077. The cubic root of 2143222506 is about 1289.3052577800.

Adding to 2143222506 its reverse (6052223412), we get a palindrome (8195445918).

The spelling of 2143222506 in words is "two billion, one hundred forty-three million, two hundred twenty-two thousand, five hundred six".