201213003421 has 2 divisors, whose sum is σ = 201213003422. Its totient is φ = 201213003420.

The previous prime is 201213003403. The next prime is 201213003437. The reversal of 201213003421 is 124300312102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200412905625 + 800097796 = 447675^2 + 28286^2 .

It is a cyclic number.

It is not a de Polignac number, because 201213003421 - 2⁷ = 201213003293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201213003461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606501710 + 100606501711.

It is an arithmetic number, because the mean of its divisors is an integer number (100606501711).

Almost surely, 2^201213003421 is an apocalyptic number.

It is an amenable number.

201213003421 is a deficient number, since it is larger than the sum of its proper divisors (1).

201213003421 is an equidigital number, since it uses as much as digits as its factorization.

201213003421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201213003421 its reverse (124300312102), we get a palindrome (325513315523).

The spelling of 201213003421 in words is "two hundred one billion, two hundred thirteen million, three thousand, four hundred twenty-one".