20100220112 has 40 divisors (see below), whose sum is σ = 44535691200. Its totient is φ = 8608948992.

The previous prime is 20100220109. The next prime is 20100220139. The reversal of 20100220112 is 21102200102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20100220093 and 20100220102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124439 + ... + 235977.

It is an arithmetic number, because the mean of its divisors is an integer number (1113392280).

Almost surely, 2^20100220112 is an apocalyptic number.

It is an amenable number.

20100220112 is an abundant number, since it is smaller than the sum of its proper divisors (24435471088).

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

20100220112 is a wasteful number, since it uses less digits than its factorization.

20100220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113163 (or 113157 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100220112 its reverse (21102200102), we get a palindrome (41202420214).

The spelling of 20100220112 in words is "twenty billion, one hundred million, two hundred twenty thousand, one hundred twelve".