221122100312 has 16 divisors (see below), whose sum is σ = 419852090400. Its totient is φ = 109161542880.

The previous prime is 221122100299. The next prime is 221122100317. The reversal of 221122100312 is 213001221122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122100317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174937739 + ... + 174939002.

It is an arithmetic number, because the mean of its divisors is an integer number (26240755650).

Almost surely, 2^221122100312 is an apocalyptic number.

It is an amenable number.

221122100312 is a deficient number, since it is larger than the sum of its proper divisors (198729990088).

221122100312 is a wasteful number, since it uses less digits than its factorization.

221122100312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349876826 (or 349876822 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221122100312 its reverse (213001221122), we get a palindrome (434123321434).

The spelling of 221122100312 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred thousand, three hundred twelve".