201220130212321 has 16 divisors (see below), whose sum is σ = 222002130954240. Its totient is φ = 180858744691920.

The previous prime is 201220130212291. The next prime is 201220130212327. The reversal of 201220130212321 is 123212031022102.

It is not a de Polignac number, because 201220130212321 - 2⁵ = 201220130212289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201220130212292 and 201220130212301.

It is not an unprimeable number, because it can be changed into a prime (201220130212327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142755385 + ... + 144158038.

It is an arithmetic number, because the mean of its divisors is an integer number (13875133184640).

Almost surely, 2^{201220130212321} is an apocalyptic number.

It is an amenable number.

201220130212321 is a deficient number, since it is larger than the sum of its proper divisors (20782000741919).

201220130212321 is a wasteful number, since it uses less digits than its factorization.

201220130212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286914156.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 201220130212321 its reverse (123212031022102), we get a palindrome (324432161234423).

The spelling of 201220130212321 in words is "two hundred one trillion, two hundred twenty billion, one hundred thirty million, two hundred twelve thousand, three hundred twenty-one".