11201011020 has 96 divisors (see below), whose sum is σ = 35267581440. Its totient is φ = 2950937280.

The previous prime is 11201011013. The next prime is 11201011033. The reversal of 11201011020 is 2011010211.

It is a happy number.

It is a super-2 number, since 2×11201011020² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11201010993 and 11201011011.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80136 + ... + 169775.

It is an arithmetic number, because the mean of its divisors is an integer number (367370640).

Almost surely, 2^11201011020 is an apocalyptic number.

11201011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201011020 is an abundant number, since it is smaller than the sum of its proper divisors (24066570420).

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

11201011020 is a wasteful number, since it uses less digits than its factorization.

11201011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250012 (or 250004 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11201011020 its reverse (2011010211), we get a palindrome (13212021231).

The spelling of 11201011020 in words is "eleven billion, two hundred one million, eleven thousand, twenty".