212200041421 has 4 divisors (see below), whose sum is σ = 214387670812. Its totient is φ = 210012412032.

The previous prime is 212200041413. The next prime is 212200041523. The reversal of 212200041421 is 124140002212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42629860900 + 169570180521 = 206470^2 + 411789^2 .

It is a cyclic number.

It is not a de Polignac number, because 212200041421 - 2³ = 212200041413 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 (212200041121) 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, 1093814550 + ... + 1093814743.

It is an arithmetic number, because the mean of its divisors is an integer number (53596917703).

Almost surely, 2^212200041421 is an apocalyptic number.

It is an amenable number.

212200041421 is a deficient number, since it is larger than the sum of its proper divisors (2187629391).

212200041421 is an equidigital number, since it uses as much as digits as its factorization.

212200041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187629390.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212200041421 its reverse (124140002212), we get a palindrome (336340043633).

The spelling of 212200041421 in words is "two hundred twelve billion, two hundred million, forty-one thousand, four hundred twenty-one".