21013333422001 has 2 divisors, whose sum is σ = 21013333422002. Its totient is φ = 21013333422000.

The previous prime is 21013333421959. The next prime is 21013333422019. The reversal of 21013333422001 is 10022433331012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12713610328225 + 8299723093776 = 3565615^2 + 2880924^2 .

It is a cyclic number.

It is not a de Polignac number, because 21013333422001 - 2⁹ = 21013333421489 is a prime.

It is not a weakly prime, because it can be changed into another prime (21013333422041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506666711000 + 10506666711001.

It is an arithmetic number, because the mean of its divisors is an integer number (10506666711001).

Almost surely, 2^{21013333422001} is an apocalyptic number.

It is an amenable number.

21013333422001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013333422001 is an equidigital number, since it uses as much as digits as its factorization.

21013333422001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21013333422001 its reverse (10022433331012), we get a palindrome (31035766753013).

The spelling of 21013333422001 in words is "twenty-one trillion, thirteen billion, three hundred thirty-three million, four hundred twenty-two thousand, one".