211421024211 has 8 divisors (see below), whose sum is σ = 281903755264. Its totient is φ = 140942821320.

The previous prime is 211421024207. The next prime is 211421024233. The reversal of 211421024211 is 112420124112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211421024211 - 2² = 211421024207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211421023211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1021555 + ... + 1210956.

It is an arithmetic number, because the mean of its divisors is an integer number (35237969408).

Almost surely, 2^211421024211 is an apocalyptic number.

211421024211 is a deficient number, since it is larger than the sum of its proper divisors (70482731053).

211421024211 is a wasteful number, since it uses less digits than its factorization.

211421024211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264081.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211421024211 its reverse (112420124112), we get a palindrome (323841148323).

Subtracting from 211421024211 its reverse (112420124112), we obtain a palindrome (99000900099).

The spelling of 211421024211 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-four thousand, two hundred eleven".