211421004443 has 8 divisors (see below), whose sum is σ = 230648991600. Its totient is φ = 192194333280.

The previous prime is 211421004329. The next prime is 211421004481. The reversal of 211421004443 is 344400124112.

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 211421004443 - 2¹⁴ = 211420988059 is a prime.

It is a super-2 number, since 2×211421004443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211421001443) 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, 23333 + ... + 650681.

It is an arithmetic number, because the mean of its divisors is an integer number (28831123950).

Almost surely, 2^211421004443 is an apocalyptic number.

211421004443 is a deficient number, since it is larger than the sum of its proper divisors (19227987157).

211421004443 is a wasteful number, since it uses less digits than its factorization.

211421004443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657997.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 211421004443 its reverse (344400124112), we get a palindrome (555821128555).

The spelling of 211421004443 in words is "two hundred eleven billion, four hundred twenty-one million, four thousand, four hundred forty-three".