11101212020 has 12 divisors (see below), whose sum is σ = 23312545284. Its totient is φ = 4440484800.

The previous prime is 11101212019. The next prime is 11101212077. The reversal of 11101212020 is 2021210111.

It can be written as a sum of positive squares in 2 ways, for example, as 7028474896 + 4072737124 = 83836^2 + 63818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11101211992 and 11101212010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277530281 + ... + 277530320.

It is an arithmetic number, because the mean of its divisors is an integer number (1942712107).

Almost surely, 2^11101212020 is an apocalyptic number.

11101212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101212020 is an abundant number, since it is smaller than the sum of its proper divisors (12211333264).

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

11101212020 is a wasteful number, since it uses less digits than its factorization.

11101212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555060610 (or 555060608 counting only the distinct ones).

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

Adding to 11101212020 its reverse (2021210111), we get a palindrome (13122422131).

The spelling of 11101212020 in words is "eleven billion, one hundred one million, two hundred twelve thousand, twenty".