212101122221113 has 4 divisors (see below), whose sum is σ = 212691933146880. Its totient is φ = 211510311295348.

The previous prime is 212101122221101. The next prime is 212101122221137. The reversal of 212101122221113 is 311122221101212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212101122221113 - 2³³ = 212092532286521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212101122222113) 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, 295405462345 + ... + 295405463062.

It is an arithmetic number, because the mean of its divisors is an integer number (53172983286720).

Almost surely, 2^{212101122221113} is an apocalyptic number.

It is an amenable number.

212101122221113 is a deficient number, since it is larger than the sum of its proper divisors (590810925767).

212101122221113 is an equidigital number, since it uses as much as digits as its factorization.

212101122221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590810925766.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 212101122221113 its reverse (311122221101212), we get a palindrome (523223343322325).

The spelling of 212101122221113 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred thirteen".