20010220100000 has 144 divisors (see below), whose sum is σ = 53028502817976. Its totient is φ = 7388388480000.

The previous prime is 20010220099931. The next prime is 20010220100009. The reversal of 20010220100000 is 102201002.

It can be written as a sum of positive squares in 12 ways, for example, as 13272935385616 + 6737284714384 = 3643204^2 + 2595628^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (20010220100009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6396239 + ... + 8996238.

Almost surely, 2^{20010220100000} is an apocalyptic number.

20010220100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010220100000 is an abundant number, since it is smaller than the sum of its proper divisors (33018282717976).

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

20010220100000 is an equidigital number, since it uses as much as digits as its factorization.

20010220100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15392525 (or 15392497 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20010220100000 its reverse (102201002), we get a palindrome (20010322301002).

The spelling of 20010220100000 in words is "twenty trillion, ten billion, two hundred twenty million, one hundred thousand".