211421423303 has 16 divisors (see below), whose sum is σ = 225804192000. Its totient is φ = 197513648640.

The previous prime is 211421423267. The next prime is 211421423347. The reversal of 211421423303 is 303324124112.

It is a cyclic number.

It is not a de Polignac number, because 211421423303 - 2¹⁰ = 211421422279 is a prime.

It is a super-2 number, since 2×211421423303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421423903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6770975 + ... + 6802127.

It is an arithmetic number, because the mean of its divisors is an integer number (14112762000).

Almost surely, 2^211421423303 is an apocalyptic number.

211421423303 is a deficient number, since it is larger than the sum of its proper divisors (14382768697).

211421423303 is a wasteful number, since it uses less digits than its factorization.

211421423303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38762.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 211421423303 its reverse (303324124112), we get a palindrome (514745547415).

The spelling of 211421423303 in words is "two hundred eleven billion, four hundred twenty-one million, four hundred twenty-three thousand, three hundred three".