215552534122 has 4 divisors (see below), whose sum is σ = 323328801186. Its totient is φ = 107776267060.

The previous prime is 215552534111. The next prime is 215552534137. The reversal of 215552534122 is 221435255512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 170247837321 + 45304696801 = 412611^2 + 212849^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53888133529 + ... + 53888133532.

Almost surely, 2^215552534122 is an apocalyptic number.

215552534122 is a deficient number, since it is larger than the sum of its proper divisors (107776267064).

215552534122 is a wasteful number, since it uses less digits than its factorization.

215552534122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107776267063.

The product of its digits is 120000, while the sum is 37.

Adding to 215552534122 its reverse (221435255512), we get a palindrome (436987789634).

The spelling of 215552534122 in words is "two hundred fifteen billion, five hundred fifty-two million, five hundred thirty-four thousand, one hundred twenty-two".