20202111312020 has 288 divisors, whose sum is σ = 49831286351616. Its totient is φ = 6857841070080.

The previous prime is 20202111311959. The next prime is 20202111312023. The reversal of 20202111312020 is 2021311120202.

It is a self number, because there is not a number n which added to its sum of digits gives 20202111312020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202111312023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3860519324 + ... + 3860524556.

It is an arithmetic number, because the mean of its divisors is an integer number (173025299832).

Almost surely, 2^{20202111312020} is an apocalyptic number.

20202111312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20202111312020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24915643175808).

20202111312020 is an abundant number, since it is smaller than the sum of its proper divisors (29629175039596).

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

20202111312020 is a wasteful number, since it uses less digits than its factorization.

20202111312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943 (or 6930 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20202111312020 its reverse (2021311120202), we get a palindrome (22223422432222).

The spelling of 20202111312020 in words is "twenty trillion, two hundred two billion, one hundred eleven million, three hundred twelve thousand, twenty".