20011022112 has 48 divisors (see below), whose sum is σ = 52543052352. Its totient is φ = 6668547840.

The previous prime is 20011022111. The next prime is 20011022113. The reversal of 20011022112 is 21122011002.

It is an interprime number because it is at equal distance from previous prime (20011022111) and next prime (20011022113).

It is a tau number, because it is divible by the number of its divisors (48).

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

It is not an unprimeable number, because it can be changed into a prime (20011022111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358662 + ... + 410682.

It is an arithmetic number, because the mean of its divisors is an integer number (1094646924).

Almost surely, 2^20011022112 is an apocalyptic number.

It is an amenable number.

20011022112 is an abundant number, since it is smaller than the sum of its proper divisors (32532030240).

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

20011022112 is a wasteful number, since it uses less digits than its factorization.

20011022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56041 (or 56033 counting only the distinct ones).

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

Adding to 20011022112 its reverse (21122011002), we get a palindrome (41133033114).

It can be divided in two parts, 200110 and 22112, that added together give a palindrome (222222).

The spelling of 20011022112 in words is "twenty billion, eleven million, twenty-two thousand, one hundred twelve".