201012304421 has 2 divisors, whose sum is σ = 201012304422. Its totient is φ = 201012304420.

The previous prime is 201012304321. The next prime is 201012304429. The reversal of 201012304421 is 124403210102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167993416900 + 33018887521 = 409870^2 + 181711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201012304421 is a prime.

It is a super-2 number, since 2×201012304421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201012304393 and 201012304402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201012304429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100506152210 + 100506152211.

It is an arithmetic number, because the mean of its divisors is an integer number (100506152211).

Almost surely, 2^201012304421 is an apocalyptic number.

It is an amenable number.

201012304421 is a deficient number, since it is larger than the sum of its proper divisors (1).

201012304421 is an equidigital number, since it uses as much as digits as its factorization.

201012304421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201012304421 its reverse (124403210102), we get a palindrome (325415514523).

The spelling of 201012304421 in words is "two hundred one billion, twelve million, three hundred four thousand, four hundred twenty-one".