20010112122 has 128 divisors (see below), whose sum is σ = 54267107328. Its totient is φ = 4749984000.

The previous prime is 20010112103. The next prime is 20010112127. The reversal of 20010112122 is 22121101002.

It is a super-2 number, since 2×20010112122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010112098 and 20010112107.

It is not an unprimeable number, because it can be changed into a prime (20010112127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 590113 + ... + 623099.

It is an arithmetic number, because the mean of its divisors is an integer number (423961776).

Almost surely, 2^20010112122 is an apocalyptic number.

20010112122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010112122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27133553664).

20010112122 is an abundant number, since it is smaller than the sum of its proper divisors (34256995206).

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

20010112122 is a wasteful number, since it uses less digits than its factorization.

20010112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33124.

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

Adding to 20010112122 its reverse (22121101002), we get a palindrome (42131213124).

The spelling of 20010112122 in words is "twenty billion, ten million, one hundred twelve thousand, one hundred twenty-two".