21034112201 has 2 divisors, whose sum is σ = 21034112202. Its totient is φ = 21034112200.

The previous prime is 21034112153. The next prime is 21034112213. The reversal of 21034112201 is 10221143012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11225190601 + 9808921600 = 105949^2 + 99040^2 .

It is a cyclic number.

It is not a de Polignac number, because 21034112201 - 2⁶ = 21034112137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21034112201.

It is not a weakly prime, because it can be changed into another prime (21034112221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517056100 + 10517056101.

It is an arithmetic number, because the mean of its divisors is an integer number (10517056101).

Almost surely, 2^21034112201 is an apocalyptic number.

It is an amenable number.

21034112201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21034112201 is an equidigital number, since it uses as much as digits as its factorization.

21034112201 is an evil number, because the sum of its binary digits is even.

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

Adding to 21034112201 its reverse (10221143012), we get a palindrome (31255255213).

The spelling of 21034112201 in words is "twenty-one billion, thirty-four million, one hundred twelve thousand, two hundred one".