11220120202212 has 108 divisors (see below), whose sum is σ = 29397310442500. Its totient is φ = 3608169836544.

The previous prime is 11220120202211. The next prime is 11220120202217. The reversal of 11220120202212 is 21220202102211.

It is a happy number.

11220120202212 is a `hidden beast` number, since 11 + 220 + 1 + 20 + 202 + 212 = 666.

11220120202212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 267303476196 + 10952816726016 = 517014^2 + 3309504^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11220120202211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37666368 + ... + 37963080.

Almost surely, 2^{11220120202212} is an apocalyptic number.

11220120202212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220120202212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14698655221250).

11220120202212 is an abundant number, since it is smaller than the sum of its proper divisors (18177190240288).

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

11220120202212 is a wasteful number, since it uses less digits than its factorization.

11220120202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298030 (or 297996 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11220120202212 its reverse (21220202102211), we get a palindrome (32440322304423).

The spelling of 11220120202212 in words is "eleven trillion, two hundred twenty billion, one hundred twenty million, two hundred two thousand, two hundred twelve".