11321021220210 has 256 divisors, whose sum is σ = 33570197176320. Its totient is φ = 2696032823040.

The previous prime is 11321021220203. The next prime is 11321021220211. The reversal of 11321021220210 is 1202212012311.

11321021220210 is a `hidden beast` number, since 1 + 1 + 3 + 210 + 21 + 220 + 210 = 666.

11321021220210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (11321021220211) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 429024637 + ... + 429051023.

It is an arithmetic number, because the mean of its divisors is an integer number (131133582720).

Almost surely, 2^{11321021220210} is an apocalyptic number.

11321021220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11321021220210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16785098588160).

11321021220210 is an abundant number, since it is smaller than the sum of its proper divisors (22249175956110).

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

11321021220210 is a wasteful number, since it uses less digits than its factorization.

11321021220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30390 (or 30384 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11321021220210 its reverse (1202212012311), we get a palindrome (12523233232521).

The spelling of 11321021220210 in words is "eleven trillion, three hundred twenty-one billion, twenty-one million, two hundred twenty thousand, two hundred ten".