214111020421 has 4 divisors (see below), whose sum is σ = 217044048172. Its totient is φ = 211177992672.

The previous prime is 214111020397. The next prime is 214111020443. The reversal of 214111020421 is 124020111412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47475616321 + 166635404100 = 217889^2 + 408210^2 .

It is a cyclic number.

It is not a de Polignac number, because 214111020421 - 2¹⁵ = 214110987653 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 (214111023421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466513766 + ... + 1466513911.

It is an arithmetic number, because the mean of its divisors is an integer number (54261012043).

Almost surely, 2^214111020421 is an apocalyptic number.

It is an amenable number.

214111020421 is a deficient number, since it is larger than the sum of its proper divisors (2933027751).

214111020421 is an equidigital number, since it uses as much as digits as its factorization.

214111020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933027750.

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

Adding to 214111020421 its reverse (124020111412), we get a palindrome (338131131833).

Subtracting from 214111020421 its reverse (124020111412), we obtain a palindrome (90090909009).

The spelling of 214111020421 in words is "two hundred fourteen billion, one hundred eleven million, twenty thousand, four hundred twenty-one".