201030212321 has 2 divisors, whose sum is σ = 201030212322. Its totient is φ = 201030212320.

The previous prime is 201030212219. The next prime is 201030212393. The reversal of 201030212321 is 123212030102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183153185296 + 17877027025 = 427964^2 + 133705^2 .

It is a cyclic number.

It is not a de Polignac number, because 201030212321 - 2³⁴ = 183850343137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201030212321.

It is not a weakly prime, because it can be changed into another prime (201030212521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100515106160 + 100515106161.

It is an arithmetic number, because the mean of its divisors is an integer number (100515106161).

Almost surely, 2^201030212321 is an apocalyptic number.

It is an amenable number.

201030212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

201030212321 is an equidigital number, since it uses as much as digits as its factorization.

201030212321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 201030212321 its reverse (123212030102), we get a palindrome (324242242423).

The spelling of 201030212321 in words is "two hundred one billion, thirty million, two hundred twelve thousand, three hundred twenty-one".