21020101001201 has 2 divisors, whose sum is σ = 21020101001202. Its totient is φ = 21020101001200.

The previous prime is 21020101001183. The next prime is 21020101001309. The reversal of 21020101001201 is 10210010102012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13438448890801 + 7581652110400 = 3665849^2 + 2753480^2 .

It is a cyclic number.

It is not a de Polignac number, because 21020101001201 - 2¹⁰ = 21020101000177 is a prime.

It is a super-2 number, since 2×21020101001201² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21020101001101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510050500600 + 10510050500601.

It is an arithmetic number, because the mean of its divisors is an integer number (10510050500601).

Almost surely, 2^{21020101001201} is an apocalyptic number.

It is an amenable number.

21020101001201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020101001201 is an equidigital number, since it uses as much as digits as its factorization.

21020101001201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21020101001201 its reverse (10210010102012), we get a palindrome (31230111103213).

The spelling of 21020101001201 in words is "twenty-one trillion, twenty billion, one hundred one million, one thousand, two hundred one".