211421024011 has 8 divisors (see below), whose sum is σ = 212854786560. Its totient is φ = 209988928872.

The previous prime is 211421023997. The next prime is 211421024027. The reversal of 211421024011 is 110420124112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 211421024011 - 2⁷ = 211421023883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211421024011.

It is not an unprimeable number, because it can be changed into a prime (211421024041) 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, 161875 + ... + 670108.

It is an arithmetic number, because the mean of its divisors is an integer number (26606848320).

Almost surely, 2^211421024011 is an apocalyptic number.

211421024011 is a deficient number, since it is larger than the sum of its proper divisors (1433762549).

211421024011 is a wasteful number, since it uses less digits than its factorization.

211421024011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833705.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211421024011 its reverse (110420124112), we get a palindrome (321841148123).

The spelling of 211421024011 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-four thousand, eleven".