20010122112 has 64 divisors (see below), whose sum is σ = 53201894400. Its totient is φ = 6663765504.

The previous prime is 20010122101. The next prime is 20010122117. The reversal of 20010122112 is 21122101002.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010122117) 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, 393439 + ... + 441377.

It is an arithmetic number, because the mean of its divisors is an integer number (831279600).

Almost surely, 2^20010122112 is an apocalyptic number.

It is an amenable number.

20010122112 is an abundant number, since it is smaller than the sum of its proper divisors (33191772288).

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

20010122112 is a wasteful number, since it uses less digits than its factorization.

20010122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49043 (or 49031 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20010122112 its reverse (21122101002), we get a palindrome (41132223114).

The spelling of 20010122112 in words is "twenty billion, ten million, one hundred twenty-two thousand, one hundred twelve".