20011012110020 has 96 divisors (see below), whose sum is σ = 43071754320000. Its totient is φ = 7806951419904.

The previous prime is 20011012110017. The next prime is 20011012110071. The reversal of 20011012110020 is 2001121011002.

It is a junction number, because it is equal to n+sod(n) for n = 20011012109983 and 20011012110010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124599731 + ... + 124760229.

It is an arithmetic number, because the mean of its divisors is an integer number (448664107500).

Almost surely, 2^{20011012110020} is an apocalyptic number.

20011012110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011012110020 is an abundant number, since it is smaller than the sum of its proper divisors (23060742209980).

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

20011012110020 is a wasteful number, since it uses less digits than its factorization.

20011012110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161397 (or 161395 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20011012110020 its reverse (2001121011002), we get a palindrome (22012133121022).

The spelling of 20011012110020 in words is "twenty trillion, eleven billion, twelve million, one hundred ten thousand, twenty".