20201200111020 has 96 divisors (see below), whose sum is σ = 56640799756800. Its totient is φ = 5379614930944.

The previous prime is 20201200110997. The next prime is 20201200111021. The reversal of 20201200111020 is 2011100210202.

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 = 20201200110987 and 20201200111005.

It is not an unprimeable number, because it can be changed into a prime (20201200111021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197212657 + ... + 197315063.

It is an arithmetic number, because the mean of its divisors is an integer number (590008330800).

Almost surely, 2^{20201200111020} is an apocalyptic number.

20201200111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201200111020 is an abundant number, since it is smaller than the sum of its proper divisors (36439599645780).

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

20201200111020 is a wasteful number, since it uses less digits than its factorization.

20201200111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106887 (or 106885 counting only the distinct ones).

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

Adding to 20201200111020 its reverse (2011100210202), we get a palindrome (22212300321222).

The spelling of 20201200111020 in words is "twenty trillion, two hundred one billion, two hundred million, one hundred eleven thousand, twenty".