214023421421 has 2 divisors, whose sum is σ = 214023421422. Its totient is φ = 214023421420.

The previous prime is 214023421397. The next prime is 214023421471. The reversal of 214023421421 is 124124320412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158109616900 + 55913804521 = 397630^2 + 236461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214023421421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214023421471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107011710710 + 107011710711.

It is an arithmetic number, because the mean of its divisors is an integer number (107011710711).

Almost surely, 2^214023421421 is an apocalyptic number.

It is an amenable number.

214023421421 is a deficient number, since it is larger than the sum of its proper divisors (1).

214023421421 is an equidigital number, since it uses as much as digits as its factorization.

214023421421 is an evil number, because the sum of its binary digits is even.

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

Adding to 214023421421 its reverse (124124320412), we get a palindrome (338147741833).

The spelling of 214023421421 in words is "two hundred fourteen billion, twenty-three million, four hundred twenty-one thousand, four hundred twenty-one".