211130012421 has 12 divisors (see below), whose sum is σ = 304969584972. Its totient is φ = 140751490176.

The previous prime is 211130012363. The next prime is 211130012479. The reversal of 211130012421 is 124210031112.

211130012421 is a `hidden beast` number, since 211 + 1 + 30 + 0 + 1 + 2 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (211130012363) and next prime (211130012479).

It can be written as a sum of positive squares in 2 ways, for example, as 62207343396 + 148922669025 = 249414^2 + 385905^2 .

It is not a de Polignac number, because 211130012421 - 2⁷ = 211130012293 is a prime.

It is a super-2 number, since 2×211130012421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211130012394 and 211130012403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211130012021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1134835 + ... + 1307711.

It is an arithmetic number, because the mean of its divisors is an integer number (25414132081).

Almost surely, 2^211130012421 is an apocalyptic number.

It is an amenable number.

211130012421 is a deficient number, since it is larger than the sum of its proper divisors (93839572551).

211130012421 is a wasteful number, since it uses less digits than its factorization.

211130012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308580 (or 308577 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211130012421 its reverse (124210031112), we get a palindrome (335340043533).

The spelling of 211130012421 in words is "two hundred eleven billion, one hundred thirty million, twelve thousand, four hundred twenty-one".