20221213332 has 24 divisors (see below), whose sum is σ = 47228272000. Its totient is φ = 6733912896.

The previous prime is 20221213297. The next prime is 20221213339. The reversal of 20221213332 is 23331212202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20221213299 and 20221213308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221213339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798457 + ... + 823392.

Almost surely, 2^20221213332 is an apocalyptic number.

It is an amenable number.

20221213332 is an abundant number, since it is smaller than the sum of its proper divisors (27007058668).

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

20221213332 is a wasteful number, since it uses less digits than its factorization.

20221213332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622895 (or 1622893 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20221213332 its reverse (23331212202), we get a palindrome (43552425534).

The spelling of 20221213332 in words is "twenty billion, two hundred twenty-one million, two hundred thirteen thousand, three hundred thirty-two".