216106712234122 has 4 divisors (see below), whose sum is σ = 324160068351186. Its totient is φ = 108053356117060.

The previous prime is 216106712234107. The next prime is 216106712234123. The reversal of 216106712234122 is 221432217601612.

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., 142010098406401 + 74096613827721 = 11916799^2 + 8607939^2 .

It is a super-2 number, since 2×216106712234122² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216106712234123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54026678058529 + ... + 54026678058532.

Almost surely, 2^{216106712234122} is an apocalyptic number.

216106712234122 is a deficient number, since it is larger than the sum of its proper divisors (108053356117064).

216106712234122 is a wasteful number, since it uses less digits than its factorization.

216106712234122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108053356117063.

The product of its (nonzero) digits is 96768, while the sum is 40.

Adding to 216106712234122 its reverse (221432217601612), we get a palindrome (437538929835734).

The spelling of 216106712234122 in words is "two hundred sixteen trillion, one hundred six billion, seven hundred twelve million, two hundred thirty-four thousand, one hundred twenty-two".