11212221102210 has 128 divisors (see below), whose sum is σ = 30061613514240. Its totient is φ = 2973700622592.

The previous prime is 11212221102197. The next prime is 11212221102233. The reversal of 11212221102210 is 1220112221211.

11212221102210 is a `hidden beast` number, since 1 + 1 + 212 + 221 + 10 + 221 + 0 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157247187 + ... + 157318473.

It is an arithmetic number, because the mean of its divisors is an integer number (234856355580).

Almost surely, 2^{11212221102210} is an apocalyptic number.

11212221102210 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 11212221102210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15030806757120).

11212221102210 is an abundant number, since it is smaller than the sum of its proper divisors (18849392412030).

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

11212221102210 is a wasteful number, since it uses less digits than its factorization.

11212221102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74457 (or 74451 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212221102210 its reverse (1220112221211), we get a palindrome (12432333323421).

The spelling of 11212221102210 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, one hundred two thousand, two hundred ten".