11212220020220 has 12 divisors (see below), whose sum is σ = 23545662042504. Its totient is φ = 4484888008080.

The previous prime is 11212220020219. The next prime is 11212220020223. The reversal of 11212220020220 is 2202002221211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212220020223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280305500486 + ... + 280305500525.

It is an arithmetic number, because the mean of its divisors is an integer number (1962138503542).

Almost surely, 2^{11212220020220} is an apocalyptic number.

11212220020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212220020220 is an abundant number, since it is smaller than the sum of its proper divisors (12333442022284).

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

11212220020220 is a wasteful number, since it uses less digits than its factorization.

11212220020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560611001020 (or 560611001018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11212220020220 its reverse (2202002221211), we get a palindrome (13414222241431).

The spelling of 11212220020220 in words is "eleven trillion, two hundred twelve billion, two hundred twenty million, twenty thousand, two hundred twenty".