11121002020 has 24 divisors (see below), whose sum is σ = 23508773568. Its totient is φ = 4418940000.

The previous prime is 11121002017. The next prime is 11121002023. The reversal of 11121002020 is 2020012111.

It is an interprime number because it is at equal distance from previous prime (11121002017) and next prime (11121002023).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11121001988 and 11121002006.

It is not an unprimeable number, because it can be changed into a prime (11121002023) 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, 1838206 + ... + 1844245.

It is an arithmetic number, because the mean of its divisors is an integer number (979532232).

Almost surely, 2^11121002020 is an apocalyptic number.

11121002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121002020 is an abundant number, since it is smaller than the sum of its proper divisors (12387771548).

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

11121002020 is a wasteful number, since it uses less digits than its factorization.

11121002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682611 (or 3682609 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11121002020 its reverse (2020012111), we get a palindrome (13141014131).

The spelling of 11121002020 in words is "eleven billion, one hundred twenty-one million, two thousand, twenty".