11201012100020 has 24 divisors (see below), whose sum is σ = 23522230392864. Its totient is φ = 4480384843296.

The previous prime is 11201012100007. The next prime is 11201012100029. The reversal of 11201012100020 is 2000121010211.

It is a junction number, because it is equal to n+sod(n) for n = 11201012099974 and 11201012100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201012100029) 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, 3851159 + ... + 6101921.

It is an arithmetic number, because the mean of its divisors is an integer number (980092933036).

Almost surely, 2^{11201012100020} is an apocalyptic number.

11201012100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201012100020 is an abundant number, since it is smaller than the sum of its proper divisors (12321218292844).

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

11201012100020 is a wasteful number, since it uses less digits than its factorization.

11201012100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499599 (or 2499597 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11201012100020 its reverse (2000121010211), we get a palindrome (13201133110231).

The spelling of 11201012100020 in words is "eleven trillion, two hundred one billion, twelve million, one hundred thousand, twenty".