211410430421 has 24 divisors (see below), whose sum is σ = 227936520504. Its totient is φ = 195996205440.

The previous prime is 211410430417. The next prime is 211410430433. The reversal of 211410430421 is 124034014112.

It can be written as a sum of positive squares in 4 ways, for example, as 55677593521 + 155732836900 = 235961^2 + 394630^2 .

It is not a de Polignac number, because 211410430421 - 2² = 211410430417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211410430411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4313771 + ... + 4362503.

It is an arithmetic number, because the mean of its divisors is an integer number (9497355021).

Almost surely, 2^211410430421 is an apocalyptic number.

It is an amenable number.

211410430421 is a deficient number, since it is larger than the sum of its proper divisors (16526090083).

211410430421 is a wasteful number, since it uses less digits than its factorization.

211410430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49029 (or 49010 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 211410430421 its reverse (124034014112), we get a palindrome (335444444533).

The spelling of 211410430421 in words is "two hundred eleven billion, four hundred ten million, four hundred thirty thousand, four hundred twenty-one".