20221133212 has 36 divisors (see below), whose sum is σ = 41172682320. Its totient is φ = 8664466944.

The previous prime is 20221133209. The next prime is 20221133243. The reversal of 20221133212 is 21233112202.

It is a self number, because there is not a number n which added to its sum of digits gives 20221133212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1662489 + ... + 1674607.

It is an arithmetic number, because the mean of its divisors is an integer number (1143685620).

Almost surely, 2^20221133212 is an apocalyptic number.

It is an amenable number.

20221133212 is an abundant number, since it is smaller than the sum of its proper divisors (20951549108).

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

20221133212 is a wasteful number, since it uses less digits than its factorization.

20221133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20650 (or 20641 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20221133212 its reverse (21233112202), we get a palindrome (41454245414).

The spelling of 20221133212 in words is "twenty billion, two hundred twenty-one million, one hundred thirty-three thousand, two hundred twelve".