212200233121 has 4 divisors (see below), whose sum is σ = 212201435952. Its totient is φ = 212199030292.

The previous prime is 212200233073. The next prime is 212200233127. The reversal of 212200233121 is 121332002212.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212200233121 - 2¹¹ = 212200231073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212200233127) 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, 279271 + ... + 708796.

It is an arithmetic number, because the mean of its divisors is an integer number (53050358988).

Almost surely, 2^212200233121 is an apocalyptic number.

It is an amenable number.

212200233121 is a deficient number, since it is larger than the sum of its proper divisors (1202831).

212200233121 is an equidigital number, since it uses as much as digits as its factorization.

212200233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202830.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212200233121 its reverse (121332002212), we get a palindrome (333532235333).

The spelling of 212200233121 in words is "two hundred twelve billion, two hundred million, two hundred thirty-three thousand, one hundred twenty-one".