11212211010 has 256 divisors, whose sum is σ = 37110140928. Its totient is φ = 2092262400.

The previous prime is 11212211009. The next prime is 11212211029. The reversal of 11212211010 is 1011221211.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1106065 + ... + 1116155.

It is an arithmetic number, because the mean of its divisors is an integer number (144961488).

Almost surely, 2^11212211010 is an apocalyptic number.

11212211010 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 11212211010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18555070464).

11212211010 is an abundant number, since it is smaller than the sum of its proper divisors (25897929918).

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

11212211010 is a wasteful number, since it uses less digits than its factorization.

11212211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10169.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11212211010 its reverse (1011221211), we get a palindrome (12223432221).

It can be divided in two parts, 11212 and 211010, that added together give a palindrome (222222).

The spelling of 11212211010 in words is "eleven billion, two hundred twelve million, two hundred eleven thousand, ten".