211130143421 has 4 divisors (see below), whose sum is σ = 211209607932. Its totient is φ = 211050678912.

The previous prime is 211130143363. The next prime is 211130143453. The reversal of 211130143421 is 124341031112.

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 129499939321 + 81630204100 = 359861^2 + 285710^2 .

It is a cyclic number.

It is not a de Polignac number, because 211130143421 - 2¹⁴ = 211130127037 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 (211130143121) 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, 39728270 + ... + 39733583.

It is an arithmetic number, because the mean of its divisors is an integer number (52802401983).

Almost surely, 2^211130143421 is an apocalyptic number.

It is an amenable number.

211130143421 is a deficient number, since it is larger than the sum of its proper divisors (79464511).

211130143421 is an equidigital number, since it uses as much as digits as its factorization.

211130143421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79464510.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211130143421 its reverse (124341031112), we get a palindrome (335471174533).

The spelling of 211130143421 in words is "two hundred eleven billion, one hundred thirty million, one hundred forty-three thousand, four hundred twenty-one".