212105116356 has 36 divisors (see below), whose sum is σ = 575713888848. Its totient is φ = 60601461648.

The previous prime is 212105116351. The next prime is 212105116393. The reversal of 212105116356 is 653611501212.

It is not an unprimeable number, because it can be changed into a prime (212105116351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180360906 + ... + 180362081.

It is an arithmetic number, because the mean of its divisors is an integer number (15992052468).

Almost surely, 2^212105116356 is an apocalyptic number.

It is an amenable number.

212105116356 is an abundant number, since it is smaller than the sum of its proper divisors (363608772492).

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

212105116356 is a wasteful number, since it uses less digits than its factorization.

212105116356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360723008 (or 360722999 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 212105116356 its reverse (653611501212), we get a palindrome (865716617568).

The spelling of 212105116356 in words is "two hundred twelve billion, one hundred five million, one hundred sixteen thousand, three hundred fifty-six".