21230002011401 has 2 divisors, whose sum is σ = 21230002011402. Its totient is φ = 21230002011400.

The previous prime is 21230002011311. The next prime is 21230002011403. The reversal of 21230002011401 is 10411020003212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17027993997001 + 4202008014400 = 4126499^2 + 2049880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21230002011401 is a prime.

Together with 21230002011403, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21230002011401.

It is not a weakly prime, because it can be changed into another prime (21230002011403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615001005700 + 10615001005701.

It is an arithmetic number, because the mean of its divisors is an integer number (10615001005701).

Almost surely, 2^{21230002011401} is an apocalyptic number.

It is an amenable number.

21230002011401 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230002011401 is an equidigital number, since it uses as much as digits as its factorization.

21230002011401 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21230002011401 its reverse (10411020003212), we get a palindrome (31641022014613).

The spelling of 21230002011401 in words is "twenty-one trillion, two hundred thirty billion, two million, eleven thousand, four hundred one".