11012102100421 has 2 divisors, whose sum is σ = 11012102100422. Its totient is φ = 11012102100420.

The previous prime is 11012102100247. The next prime is 11012102100427. The reversal of 11012102100421 is 12400120121011.

11012102100421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6721776984321 + 4290325116100 = 2592639^2 + 2071310^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012102100421 - 2¹⁵ = 11012102067653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11012102100395 and 11012102100404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012102100427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506051050210 + 5506051050211.

It is an arithmetic number, because the mean of its divisors is an integer number (5506051050211).

Almost surely, 2^{11012102100421} is an apocalyptic number.

It is an amenable number.

11012102100421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012102100421 is an equidigital number, since it uses as much as digits as its factorization.

11012102100421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11012102100421 its reverse (12400120121011), we get a palindrome (23412222221432).

The spelling of 11012102100421 in words is "eleven trillion, twelve billion, one hundred two million, one hundred thousand, four hundred twenty-one".