211433411421 has 12 divisors (see below), whose sum is σ = 305410366560. Its totient is φ = 140952584520.

The previous prime is 211433411419. The next prime is 211433411473. The reversal of 211433411421 is 124114334112.

It is a happy number.

211433411421 is a `hidden beast` number, since 211 + 4 + 33 + 411 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 211433411421 - 2¹ = 211433411419 is a prime.

It is a super-3 number, since 3×211433411421³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211433411221) 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, 241990 + ... + 693848.

It is an arithmetic number, because the mean of its divisors is an integer number (25450863880).

Almost surely, 2^211433411421 is an apocalyptic number.

It is an amenable number.

211433411421 is a deficient number, since it is larger than the sum of its proper divisors (93976955139).

211433411421 is a wasteful number, since it uses less digits than its factorization.

211433411421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503856 (or 503853 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 211433411421 its reverse (124114334112), we get a palindrome (335547745533).

The spelling of 211433411421 in words is "two hundred eleven billion, four hundred thirty-three million, four hundred eleven thousand, four hundred twenty-one".