211230003312 has 80 divisors (see below), whose sum is σ = 608562612000. Its totient is φ = 70148215296.

The previous prime is 211230003277. The next prime is 211230003319. The reversal of 211230003312 is 213300032112.

211230003312 is a `hidden beast` number, since 21 + 12 + 300 + 0 + 331 + 2 = 666.

It is a super-2 number, since 2×211230003312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211230003319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 792637 + ... + 1025052.

It is an arithmetic number, because the mean of its divisors is an integer number (7607032650).

Almost surely, 2^211230003312 is an apocalyptic number.

It is an amenable number.

211230003312 is an abundant number, since it is smaller than the sum of its proper divisors (397332608688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211230003312 is a wasteful number, since it uses less digits than its factorization.

211230003312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817975 (or 1817963 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 211230003312 its reverse (213300032112), we get a palindrome (424530035424).

The spelling of 211230003312 in words is "two hundred eleven billion, two hundred thirty million, three thousand, three hundred twelve".