21230102201201 has 4 divisors (see below), whose sum is σ = 21747909572004. Its totient is φ = 20712294830400.

The previous prime is 21230102201153. The next prime is 21230102201257. The reversal of 21230102201201 is 10210220103212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2512148920576 + 18717953280625 = 1584976^2 + 4326425^2 .

It is a cyclic number.

It is not a de Polignac number, because 21230102201201 - 2⁴² = 16832055690097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21230102201201.

It is not an unprimeable number, because it can be changed into a prime (21230102209201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258903685340 + ... + 258903685421.

It is an arithmetic number, because the mean of its divisors is an integer number (5436977393001).

Almost surely, 2^{21230102201201} is an apocalyptic number.

It is an amenable number.

21230102201201 is a deficient number, since it is larger than the sum of its proper divisors (517807370803).

21230102201201 is an equidigital number, since it uses as much as digits as its factorization.

21230102201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517807370802.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21230102201201 its reverse (10210220103212), we get a palindrome (31440322304413).

The spelling of 21230102201201 in words is "twenty-one trillion, two hundred thirty billion, one hundred two million, two hundred one thousand, two hundred one".