11021120201220 has 24 divisors (see below), whose sum is σ = 30859136563584. Its totient is φ = 2938965386976.

The previous prime is 11021120201213. The next prime is 11021120201249. The reversal of 11021120201220 is 2210202112011.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11021120201220.

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, 91842668284 + ... + 91842668403.

It is an arithmetic number, because the mean of its divisors is an integer number (1285797356816).

Almost surely, 2^{11021120201220} is an apocalyptic number.

11021120201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021120201220 is an abundant number, since it is smaller than the sum of its proper divisors (19838016362364).

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

11021120201220 is a wasteful number, since it uses less digits than its factorization.

11021120201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183685336699 (or 183685336697 counting only the distinct ones).

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

Adding to 11021120201220 its reverse (2210202112011), we get a palindrome (13231322313231).

The spelling of 11021120201220 in words is "eleven trillion, twenty-one billion, one hundred twenty million, two hundred one thousand, two hundred twenty".