11211222012020 has 24 divisors (see below), whose sum is σ = 23723288110368. Its totient is φ = 4450256064800.

The previous prime is 11211222011959. The next prime is 11211222012077. The reversal of 11211222012020 is 2021022211211.

It is a self number, because there is not a number n which added to its sum of digits gives 11211222012020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2139543566 + ... + 2139548805.

It is an arithmetic number, because the mean of its divisors is an integer number (988470337932).

Almost surely, 2^{11211222012020} is an apocalyptic number.

11211222012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211222012020 is an abundant number, since it is smaller than the sum of its proper divisors (12512066098348).

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

11211222012020 is a wasteful number, since it uses less digits than its factorization.

11211222012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279092511 (or 4279092509 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11211222012020 its reverse (2021022211211), we get a palindrome (13232244223231).

The spelling of 11211222012020 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, twelve thousand, twenty".