11222122212210 has 512 divisors, whose sum is σ = 34894331136000. Its totient is φ = 2293459660800.

The previous prime is 11222122212139. The next prime is 11222122212227. The reversal of 11222122212210 is 1221222122211.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1133428260 + ... + 1133438160.

It is an arithmetic number, because the mean of its divisors is an integer number (68152990500).

Almost surely, 2^{11222122212210} is an apocalyptic number.

11222122212210 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 11222122212210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17447165568000).

11222122212210 is an abundant number, since it is smaller than the sum of its proper divisors (23672208923790).

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

11222122212210 is a wasteful number, since it uses less digits than its factorization.

11222122212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211 (or 10197 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11222122212210 its reverse (1221222122211), we get a palindrome (12443344334421).

The spelling of 11222122212210 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred ten".