20012111202020 has 48 divisors (see below), whose sum is σ = 49200507554688. Its totient is φ = 6693946602240.

The previous prime is 20012111201981. The next prime is 20012111202023. The reversal of 20012111202020 is 2020211121002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20012111201986 and 20012111202004.

It is not an unprimeable number, because it can be changed into a prime (20012111202023) by changing a digit.

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, 1743209522 + ... + 1743221001.

It is an arithmetic number, because the mean of its divisors is an integer number (1025010574056).

Almost surely, 2^{20012111202020} is an apocalyptic number.

20012111202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012111202020 is an abundant number, since it is smaller than the sum of its proper divisors (29188396352668).

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

20012111202020 is a wasteful number, since it uses less digits than its factorization.

20012111202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486430580 (or 3486430578 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20012111202020 its reverse (2020211121002), we get a palindrome (22032322323022).

The spelling of 20012111202020 in words is "twenty trillion, twelve billion, one hundred eleven million, two hundred two thousand, twenty".