21203333032 has 16 divisors (see below), whose sum is σ = 45435713760. Its totient is φ = 9087142704.

The previous prime is 21203333029. The next prime is 21203333071. The reversal of 21203333032 is 23033330212.

It is a junction number, because it is equal to n+sod(n) for n = 21203332994 and 21203333012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189315418 + ... + 189315529.

It is an arithmetic number, because the mean of its divisors is an integer number (2839732110).

Almost surely, 2^21203333032 is an apocalyptic number.

It is an amenable number.

21203333032 is an abundant number, since it is smaller than the sum of its proper divisors (24232380728).

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

21203333032 is a wasteful number, since it uses less digits than its factorization.

21203333032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378630960 (or 378630956 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 21203333032 its reverse (23033330212), we get a palindrome (44236663244).

The spelling of 21203333032 in words is "twenty-one billion, two hundred three million, three hundred thirty-three thousand, thirty-two".