212200112111021 has 4 divisors (see below), whose sum is σ = 212222498460000. Its totient is φ = 212177725762044.

The previous prime is 212200112110991. The next prime is 212200112111023. The reversal of 212200112111021 is 120111211002212.

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 212200112111021 - 2¹⁴ = 212200112094637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200112111023) 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, 11193160271 + ... + 11193179228.

It is an arithmetic number, because the mean of its divisors is an integer number (53055624615000).

Almost surely, 2^{212200112111021} is an apocalyptic number.

It is an amenable number.

212200112111021 is a deficient number, since it is larger than the sum of its proper divisors (22386348979).

212200112111021 is an equidigital number, since it uses as much as digits as its factorization.

212200112111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22386348978.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212200112111021 its reverse (120111211002212), we get a palindrome (332311323113233).

The spelling of 212200112111021 in words is "two hundred twelve trillion, two hundred billion, one hundred twelve million, one hundred eleven thousand, twenty-one".