20021433222 has 48 divisors (see below), whose sum is σ = 49320517680. Its totient is φ = 5383913472.

The previous prime is 20021433209. The next prime is 20021433233. The reversal of 20021433222 is 22233412002.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1997947 + ... + 2007942.

It is an arithmetic number, because the mean of its divisors is an integer number (1027510785).

Almost surely, 2^20021433222 is an apocalyptic number.

20021433222 is an abundant number, since it is smaller than the sum of its proper divisors (29299084458).

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

20021433222 is a wasteful number, since it uses less digits than its factorization.

20021433222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005925 (or 4005918 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20021433222 its reverse (22233412002), we get a palindrome (42254845224).

The spelling of 20021433222 in words is "twenty billion, twenty-one million, four hundred thirty-three thousand, two hundred twenty-two".