21202222032 has 60 divisors (see below), whose sum is σ = 59390064864. Its totient is φ = 7061060160.

The previous prime is 21202222021. The next prime is 21202222039. The reversal of 21202222032 is 23022220212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21202221996 and 21202222014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202222039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96157 + ... + 227267.

Almost surely, 2^21202222032 is an apocalyptic number.

It is an amenable number.

21202222032 is an abundant number, since it is smaller than the sum of its proper divisors (38187842832).

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

21202222032 is a wasteful number, since it uses less digits than its factorization.

21202222032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132248 (or 132239 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21202222032 its reverse (23022220212), we get a palindrome (44224442244).

The spelling of 21202222032 in words is "twenty-one billion, two hundred two million, two hundred twenty-two thousand, thirty-two".