11011213012020 has 72 divisors (see below), whose sum is σ = 33385476642336. Its totient is φ = 2710452431232.

The previous prime is 11011213011991. The next prime is 11011213012087. The reversal of 11011213012020 is 2021031211011.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 542949082 + ... + 542969361.

It is an arithmetic number, because the mean of its divisors is an integer number (463687175588).

Almost surely, 2^{11011213012020} is an apocalyptic number.

11011213012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011213012020 is an abundant number, since it is smaller than the sum of its proper divisors (22374263630316).

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

11011213012020 is a wasteful number, since it uses less digits than its factorization.

11011213012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085918481 (or 1085918466 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11011213012020 its reverse (2021031211011), we get a palindrome (13032244223031).

The spelling of 11011213012020 in words is "eleven trillion, eleven billion, two hundred thirteen million, twelve thousand, twenty".