11221212110 has 16 divisors (see below), whose sum is σ = 20398165632. Its totient is φ = 4444044000.

The previous prime is 11221212097. The next prime is 11221212131. The reversal of 11221212110 is 1121212211.

It is a super-2 number, since 2×11221212110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5554046 + ... + 5556065.

It is an arithmetic number, because the mean of its divisors is an integer number (1274885352).

Almost surely, 2^11221212110 is an apocalyptic number.

11221212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221212110 is a deficient number, since it is larger than the sum of its proper divisors (9176953522).

11221212110 is a wasteful number, since it uses less digits than its factorization.

11221212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110219.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11221212110 its reverse (1121212211), we get a palindrome (12342424321).

The spelling of 11221212110 in words is "eleven billion, two hundred twenty-one million, two hundred twelve thousand, one hundred ten".