20112221112 has 32 divisors (see below), whose sum is σ = 50284222080. Its totient is φ = 6703584480.

The previous prime is 20112221099. The next prime is 20112221119. The reversal of 20112221112 is 21112221102.

It is a junction number, because it is equal to n+sod(n) for n = 20112221091 and 20112221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112221119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477333 + ... + 517755.

It is an arithmetic number, because the mean of its divisors is an integer number (1571381940).

Almost surely, 2^20112221112 is an apocalyptic number.

It is an amenable number.

20112221112 is an abundant number, since it is smaller than the sum of its proper divisors (30172000968).

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

20112221112 is a wasteful number, since it uses less digits than its factorization.

20112221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61163 (or 61159 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112221112 its reverse (21112221102), we get a palindrome (41224442214).

The spelling of 20112221112 in words is "twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twelve".