10001120220020 has 24 divisors (see below), whose sum is σ = 21153448528800. Its totient is φ = 3971667884832.

The previous prime is 10001120219941. The next prime is 10001120220023. The reversal of 10001120220020 is 2002202110001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10001120219983 and 10001120220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001120220023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1798759850 + ... + 1798765409.

It is an arithmetic number, because the mean of its divisors is an integer number (881393688700).

Almost surely, 2^{10001120220020} is an apocalyptic number.

10001120220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001120220020 is an abundant number, since it is smaller than the sum of its proper divisors (11152328308780).

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

10001120220020 is a wasteful number, since it uses less digits than its factorization.

10001120220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597525407 (or 3597525405 counting only the distinct ones).

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

Adding to 10001120220020 its reverse (2002202110001), we get a palindrome (12003322330021).

The spelling of 10001120220020 in words is "ten trillion, one billion, one hundred twenty million, two hundred twenty thousand, twenty".