11001212122020 has 48 divisors (see below), whose sum is σ = 30804319647360. Its totient is φ = 2933568403456.

The previous prime is 11001212121899. The next prime is 11001212122037. The reversal of 11001212122020 is 2022121210011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729597 + ... + 4747076.

It is an arithmetic number, because the mean of its divisors is an integer number (641756659320).

Almost surely, 2^{11001212122020} is an apocalyptic number.

11001212122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001212122020 is an abundant number, since it is smaller than the sum of its proper divisors (19803107525340).

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

11001212122020 is a wasteful number, since it uses less digits than its factorization.

11001212122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510164 (or 5510162 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11001212122020 its reverse (2022121210011), we get a palindrome (13023333332031).

The spelling of 11001212122020 in words is "eleven trillion, one billion, two hundred twelve million, one hundred twenty-two thousand, twenty".