20011052112 has 80 divisors (see below), whose sum is σ = 54153498240. Its totient is φ = 6355419136.

The previous prime is 20011052107. The next prime is 20011052123. The reversal of 20011052112 is 21125011002.

It is a junction number, because it is equal to n+sod(n) for n = 20011052091 and 20011052100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248464 + ... + 318992.

It is an arithmetic number, because the mean of its divisors is an integer number (676918728).

Almost surely, 2^20011052112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011052112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27076749120).

20011052112 is an abundant number, since it is smaller than the sum of its proper divisors (34142446128).

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

20011052112 is a wasteful number, since it uses less digits than its factorization.

20011052112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70820 (or 70814 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 20011052112 its reverse (21125011002), we get a palindrome (41136063114).

The spelling of 20011052112 in words is "twenty billion, eleven million, fifty-two thousand, one hundred twelve".