20010220111020 has 48 divisors (see below), whose sum is σ = 56034374508000. Its totient is φ = 5335510296576.

The previous prime is 20010220110983. The next prime is 20010220111067. The reversal of 20010220111020 is 2011102201002.

It is a super-2 number, since 2×20010220111020² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 20010220110987 and 20010220111005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16548645 + ... + 17716604.

It is an arithmetic number, because the mean of its divisors is an integer number (1167382802250).

Almost surely, 2^{20010220111020} is an apocalyptic number.

20010220111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010220111020 is an abundant number, since it is smaller than the sum of its proper divisors (36024154396980).

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

20010220111020 is a wasteful number, since it uses less digits than its factorization.

20010220111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34274994 (or 34274992 counting only the distinct ones).

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

Adding to 20010220111020 its reverse (2011102201002), we get a palindrome (22021322312022).

The spelling of 20010220111020 in words is "twenty trillion, ten billion, two hundred twenty million, one hundred eleven thousand, twenty".