21133420411 has 2 divisors, whose sum is σ = 21133420412. Its totient is φ = 21133420410.

The previous prime is 21133420403. The next prime is 21133420433. The reversal of 21133420411 is 11402433112.

It is an a-pointer prime, because the next prime (21133420433) can be obtained adding 21133420411 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21133420411 - 2³ = 21133420403 is a prime.

It is not a weakly prime, because it can be changed into another prime (21133420481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566710205 + 10566710206.

It is an arithmetic number, because the mean of its divisors is an integer number (10566710206).

Almost surely, 2^21133420411 is an apocalyptic number.

21133420411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133420411 is an equidigital number, since it uses as much as digits as its factorization.

21133420411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21133420411 its reverse (11402433112), we get a palindrome (32535853523).

The spelling of 21133420411 in words is "twenty-one billion, one hundred thirty-three million, four hundred twenty thousand, four hundred eleven".