21132020112 has 40 divisors (see below), whose sum is σ = 62389774656. Its totient is φ = 6037719936.

The previous prime is 21132020101. The next prime is 21132020137. The reversal of 21132020112 is 21102023112.

It is a junction number, because it is equal to n+sod(n) for n = 21132020091 and 21132020100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31446123 + ... + 31446794.

Almost surely, 2^21132020112 is an apocalyptic number.

It is an amenable number.

21132020112 is an abundant number, since it is smaller than the sum of its proper divisors (41257754544).

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

21132020112 is a wasteful number, since it uses less digits than its factorization.

21132020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62892935 (or 62892929 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21132020112 its reverse (21102023112), we get a palindrome (42234043224).

The spelling of 21132020112 in words is "twenty-one billion, one hundred thirty-two million, twenty thousand, one hundred twelve".