20221000212 has 48 divisors (see below), whose sum is σ = 54605250560. Its totient is φ = 5704294752.

The previous prime is 20221000171. The next prime is 20221000231. The reversal of 20221000212 is 21200012202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1516948 + ... + 1530219.

Almost surely, 2^20221000212 is an apocalyptic number.

It is an amenable number.

20221000212 is an abundant number, since it is smaller than the sum of its proper divisors (34384250348).

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

20221000212 is a wasteful number, since it uses less digits than its factorization.

20221000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047260 (or 3047258 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20221000212 its reverse (21200012202), we get a palindrome (41421012414).

The spelling of 20221000212 in words is "twenty billion, two hundred twenty-one million, two hundred twelve", and thus it is an aban number.