21023201000201 has 2 divisors, whose sum is σ = 21023201000202. Its totient is φ = 21023201000200.

The previous prime is 21023201000183. The next prime is 21023201000233. The reversal of 21023201000201 is 10200010232012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20230609644025 + 792591356176 = 4497845^2 + 890276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21023201000201 is a prime.

It is a super-3 number, since 3×21023201000201³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21023201000251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511600500100 + 10511600500101.

It is an arithmetic number, because the mean of its divisors is an integer number (10511600500101).

Almost surely, 2^{21023201000201} is an apocalyptic number.

It is an amenable number.

21023201000201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023201000201 is an equidigital number, since it uses as much as digits as its factorization.

21023201000201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21023201000201 its reverse (10200010232012), we get a palindrome (31223211232213).

The spelling of 21023201000201 in words is "twenty-one trillion, twenty-three billion, two hundred one million, two hundred one", and thus it is an aban number.