21110020042332 has 24 divisors (see below), whose sum is σ = 53045691388816. Its totient is φ = 6495390782208.

The previous prime is 21110020042327. The next prime is 21110020042339. The reversal of 21110020042332 is 23324002001112.

It is a junction number, because it is equal to n+sod(n) for n = 21110020042299 and 21110020042308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110020042339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67660320493 + ... + 67660320804.

Almost surely, 2^{21110020042332} is an apocalyptic number.

It is an amenable number.

21110020042332 is an abundant number, since it is smaller than the sum of its proper divisors (31935671346484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110020042332 is a wasteful number, since it uses less digits than its factorization.

21110020042332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135320641317 (or 135320641315 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21110020042332 its reverse (23324002001112), we get a palindrome (44434022043444).

The spelling of 21110020042332 in words is "twenty-one trillion, one hundred ten billion, twenty million, forty-two thousand, three hundred thirty-two".