10001020012220 has 96 divisors (see below), whose sum is σ = 21519815123520. Its totient is φ = 3903216353280.

The previous prime is 10001020012177. The next prime is 10001020012223. The reversal of 10001020012220 is 2221002010001.

It is a happy number.

10001020012220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001020012223) 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, 50339480 + ... + 50537760.

It is an arithmetic number, because the mean of its divisors is an integer number (224164740870).

Almost surely, 2^{10001020012220} is an apocalyptic number.

10001020012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001020012220 is an abundant number, since it is smaller than the sum of its proper divisors (11518795111300).

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

10001020012220 is a wasteful number, since it uses less digits than its factorization.

10001020012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198735 (or 198733 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10001020012220 its reverse (2221002010001), we get a palindrome (12222022022221).

The spelling of 10001020012220 in words is "ten trillion, one billion, twenty million, twelve thousand, two hundred twenty".