20222113212 has 144 divisors (see below), whose sum is σ = 64197504000. Its totient is φ = 5473627488.

The previous prime is 20222113211. The next prime is 20222113259. The reversal of 20222113212 is 21231122202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222113211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12 + ... + 201107.

It is an arithmetic number, because the mean of its divisors is an integer number (445816000).

Almost surely, 2^20222113212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20222113212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32098752000).

20222113212 is an abundant number, since it is smaller than the sum of its proper divisors (43975390788).

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

20222113212 is a wasteful number, since it uses less digits than its factorization.

20222113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201165 (or 201150 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20222113212 its reverse (21231122202), we get a palindrome (41453235414).

The spelling of 20222113212 in words is "twenty billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred twelve".