21103130201 has 2 divisors, whose sum is σ = 21103130202. Its totient is φ = 21103130200.

The previous prime is 21103130119. The next prime is 21103130219. The reversal of 21103130201 is 10203130112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19979539801 + 1123590400 = 141349^2 + 33520^2 .

It is a cyclic number.

It is not a de Polignac number, because 21103130201 - 2¹⁸ = 21102868057 is a prime.

It is not a weakly prime, because it can be changed into another prime (21103130261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551565100 + 10551565101.

It is an arithmetic number, because the mean of its divisors is an integer number (10551565101).

Almost surely, 2^21103130201 is an apocalyptic number.

It is an amenable number.

21103130201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103130201 is an equidigital number, since it uses as much as digits as its factorization.

21103130201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21103130201 its reverse (10203130112), we get a palindrome (31306260313).

The spelling of 21103130201 in words is "twenty-one billion, one hundred three million, one hundred thirty thousand, two hundred one".