20012221112 has 16 divisors (see below), whose sum is σ = 40409292840. Its totient is φ = 9236409696.

The previous prime is 20012221111. The next prime is 20012221121. The reversal of 20012221112 is 21112221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012221111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96212498 + ... + 96212705.

Almost surely, 2^20012221112 is an apocalyptic number.

It is an amenable number.

20012221112 is an abundant number, since it is smaller than the sum of its proper divisors (20397071728).

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

20012221112 is a wasteful number, since it uses less digits than its factorization.

20012221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192425222 (or 192425218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012221112 its reverse (21112221002), we get a palindrome (41124442114).

The spelling of 20012221112 in words is "twenty billion, twelve million, two hundred twenty-one thousand, one hundred twelve".