21332421430011 has 20 divisors (see below), whose sum is σ = 31922179284952. Its totient is φ = 14196966743808.

The previous prime is 21332421429983. The next prime is 21332421430079. The reversal of 21332421430011 is 11003412423312.

21332421430011 is a `hidden beast` number, since 2 + 1 + 3 + 324 + 21 + 4 + 300 + 11 = 666.

It is not a de Polignac number, because 21332421430011 - 2¹⁷ = 21332421298939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21332421435011) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 228170965 + ... + 228264438.

Almost surely, 2^{21332421430011} is an apocalyptic number.

21332421430011 is a deficient number, since it is larger than the sum of its proper divisors (10589757854941).

21332421430011 is an equidigital number, since it uses as much as digits as its factorization.

21332421430011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456435992 (or 456435983 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 21332421430011 its reverse (11003412423312), we get a palindrome (32335833853323).

The spelling of 21332421430011 in words is "twenty-one trillion, three hundred thirty-two billion, four hundred twenty-one million, four hundred thirty thousand, eleven".