20222121112 has 64 divisors (see below), whose sum is σ = 41365365120. Its totient is φ = 9231065088.

The previous prime is 20222121107. The next prime is 20222121131. The reversal of 20222121112 is 21112122202.

It is a happy number.

It is a super-2 number, since 2×20222121112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708298 + ... + 736294.

It is an arithmetic number, because the mean of its divisors is an integer number (646333830).

Almost surely, 2^20222121112 is an apocalyptic number.

It is an amenable number.

20222121112 is an abundant number, since it is smaller than the sum of its proper divisors (21143244008).

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

20222121112 is a wasteful number, since it uses less digits than its factorization.

20222121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28180 (or 28176 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20222121112 its reverse (21112122202), we get a palindrome (41334243314).

The spelling of 20222121112 in words is "twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".