214240012421 has 4 divisors (see below), whose sum is σ = 214241514252. Its totient is φ = 214238510592.

The previous prime is 214240012403. The next prime is 214240012447. The reversal of 214240012421 is 124210042412.

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 29413965025 + 184826047396 = 171505^2 + 429914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214240012421 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 (214240012621) 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, 511490 + ... + 830723.

It is an arithmetic number, because the mean of its divisors is an integer number (53560378563).

Almost surely, 2^214240012421 is an apocalyptic number.

It is an amenable number.

214240012421 is a deficient number, since it is larger than the sum of its proper divisors (1501831).

214240012421 is a wasteful number, since it uses less digits than its factorization.

214240012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501830.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 214240012421 its reverse (124210042412), we get a palindrome (338450054833).

The spelling of 214240012421 in words is "two hundred fourteen billion, two hundred forty million, twelve thousand, four hundred twenty-one".