2221517142 has 24 divisors (see below), whose sum is σ = 5183540544. Its totient is φ = 683543664.

The previous prime is 2221517021. The next prime is 2221517159. The reversal of 2221517142 is 2417151222.

It is a happy number.

2221517142 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 517 + 142 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4746598 + ... + 4747065.

It is an arithmetic number, because the mean of its divisors is an integer number (215980856).

Almost surely, 2^2221517142 is an apocalyptic number.

2221517142 is an abundant number, since it is smaller than the sum of its proper divisors (2962023402).

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

2221517142 is a wasteful number, since it uses less digits than its factorization.

2221517142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9493684 (or 9493681 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2221517142 is about 47132.9729807064. The cubic root of 2221517142 is about 1304.8178510030.

Adding to 2221517142 its reverse (2417151222), we get a palindrome (4638668364).

The spelling of 2221517142 in words is "two billion, two hundred twenty-one million, five hundred seventeen thousand, one hundred forty-two".