21132200120 has 32 divisors (see below), whose sum is σ = 47567535120. Its totient is φ = 8449309440.

The previous prime is 21132200119. The next prime is 21132200123. The reversal of 21132200120 is 2100223112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21132200095 and 21132200104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132200123) 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, 14666 + ... + 206105.

Almost surely, 2^21132200120 is an apocalyptic number.

21132200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21132200120 is an abundant number, since it is smaller than the sum of its proper divisors (26435335000).

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

21132200120 is a wasteful number, since it uses less digits than its factorization.

21132200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223175 (or 223171 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21132200120 its reverse (2100223112), we get a palindrome (23232423232).

The spelling of 21132200120 in words is "twenty-one billion, one hundred thirty-two million, two hundred thousand, one hundred twenty".