211142333421 has 8 divisors (see below), whose sum is σ = 312803456960. Its totient is φ = 140761555596.

The previous prime is 211142333417. The next prime is 211142333443. The reversal of 211142333421 is 124333241112.

211142333421 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 4 + 233 + 3 + 421 = 666.

It is not a de Polignac number, because 211142333421 - 2² = 211142333417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7820086423 = 211142333421 / (2 + 1 + 1 + 1 + 4 + 2 + 3 + 3 + 3 + 4 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211142333321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3910043185 + ... + 3910043238.

It is an arithmetic number, because the mean of its divisors is an integer number (39100432120).

Almost surely, 2^211142333421 is an apocalyptic number.

It is an amenable number.

211142333421 is a deficient number, since it is larger than the sum of its proper divisors (101661123539).

211142333421 is an equidigital number, since it uses as much as digits as its factorization.

211142333421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820086432 (or 7820086426 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 211142333421 its reverse (124333241112), we get a palindrome (335475574533).

The spelling of 211142333421 in words is "two hundred eleven billion, one hundred forty-two million, three hundred thirty-three thousand, four hundred twenty-one".