21013412201 has 2 divisors, whose sum is σ = 21013412202. Its totient is φ = 21013412200.

The previous prime is 21013412137. The next prime is 21013412221. The reversal of 21013412201 is 10221431012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20795082025 + 218330176 = 144205^2 + 14776^2 .

It is a cyclic number.

It is not a de Polignac number, because 21013412201 - 2⁶ = 21013412137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21013412201.

It is not a weakly prime, because it can be changed into another prime (21013412221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506706100 + 10506706101.

It is an arithmetic number, because the mean of its divisors is an integer number (10506706101).

Almost surely, 2^21013412201 is an apocalyptic number.

It is an amenable number.

21013412201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21013412201 is an equidigital number, since it uses as much as digits as its factorization.

21013412201 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 21013412201 its reverse (10221431012), we get a palindrome (31234843213).

The spelling of 21013412201 in words is "twenty-one billion, thirteen million, four hundred twelve thousand, two hundred one".