211130030421 has 6 divisors (see below), whose sum is σ = 304965599510. Its totient is φ = 140753353608.

The previous prime is 211130030411. The next prime is 211130030453. The reversal of 211130030421 is 124030031112.

211130030421 is a `hidden beast` number, since 211 + 1 + 3 + 0 + 0 + 30 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211061223396 + 68807025 = 459414^2 + 8295^2 .

It is a de Polignac number, because none of the positive numbers 2^k-211130030421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211130030394 and 211130030403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211130030411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11729446126 + ... + 11729446143.

Almost surely, 2^211130030421 is an apocalyptic number.

It is an amenable number.

211130030421 is a deficient number, since it is larger than the sum of its proper divisors (93835569089).

211130030421 is a wasteful number, since it uses less digits than its factorization.

211130030421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23458892275 (or 23458892272 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 211130030421 its reverse (124030031112), we get a palindrome (335160061533).

The spelling of 211130030421 in words is "two hundred eleven billion, one hundred thirty million, thirty thousand, four hundred twenty-one".