2221543115 has 16 divisors (see below), whose sum is σ = 3008486880. Its totient is φ = 1559953920.

The previous prime is 2221543043. The next prime is 2221543123. The reversal of 2221543115 is 5113451222.

It is not a de Polignac number, because 2221543115 - 2¹⁶ = 2221477579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694814 + ... + 698003.

It is an arithmetic number, because the mean of its divisors is an integer number (188030430).

Almost surely, 2^2221543115 is an apocalyptic number.

2221543115 is a deficient number, since it is larger than the sum of its proper divisors (786943765).

2221543115 is a wasteful number, since it uses less digits than its factorization.

2221543115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392862.

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

The square root of 2221543115 is about 47133.2485088817. The cubic root of 2221543115 is about 1304.8229361017.

Adding to 2221543115 its reverse (5113451222), we get a palindrome (7334994337).

The spelling of 2221543115 in words is "two billion, two hundred twenty-one million, five hundred forty-three thousand, one hundred fifteen".