213200112111021 has 48 divisors (see below), whose sum is σ = 370481517095040. Its totient is φ = 115413962227200.

The previous prime is 213200112110959. The next prime is 213200112111083. The reversal of 213200112111021 is 120111211002312.

It is a happy number.

213200112111021 is a `hidden beast` number, since 21 + 320 + 0 + 11 + 211 + 102 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (213200112110959) and next prime (213200112111083).

It is not a de Polignac number, because 213200112111021 - 2⁷ = 213200112110893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213200112110985 and 213200112111003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213200112111421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50893801 + ... + 54923393.

It is an arithmetic number, because the mean of its divisors is an integer number (7718364939480).

Almost surely, 2^{213200112111021} is an apocalyptic number.

213200112111021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213200112111021 is a deficient number, since it is larger than the sum of its proper divisors (157281404984019).

213200112111021 is a wasteful number, since it uses less digits than its factorization.

213200112111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073826 (or 4073823 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 213200112111021 its reverse (120111211002312), we get a palindrome (333311323113333).

The spelling of 213200112111021 in words is "two hundred thirteen trillion, two hundred billion, one hundred twelve million, one hundred eleven thousand, twenty-one".