20012122102020 has 192 divisors, whose sum is σ = 59437300366080. Its totient is φ = 5013579497472.

The previous prime is 20012122101973. The next prime is 20012122102033. The reversal of 20012122102020 is 2020122121002.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 63 ways as a sum of consecutive naturals, for example, 1503194884 + ... + 1503208196.

It is an arithmetic number, because the mean of its divisors is an integer number (309569272740).

Almost surely, 2^{20012122102020} is an apocalyptic number.

20012122102020 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 20012122102020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29718650183040).

20012122102020 is an abundant number, since it is smaller than the sum of its proper divisors (39425178264060).

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

20012122102020 is a wasteful number, since it uses less digits than its factorization.

20012122102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15894 (or 15892 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20012122102020 its reverse (2020122121002), we get a palindrome (22032244223022).

The spelling of 20012122102020 in words is "twenty trillion, twelve billion, one hundred twenty-two million, one hundred two thousand, twenty".