11221220210 has 16 divisors (see below), whose sum is σ = 20199896856. Its totient is φ = 4488110208.

The previous prime is 11221220201. The next prime is 11221220321. The reversal of 11221220210 is 1202212211.

It can be written as a sum of positive squares in 4 ways, for example, as 11047481449 + 173738761 = 105107^2 + 13181^2 .

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, 99062 + ... + 179598.

Almost surely, 2^11221220210 is an apocalyptic number.

11221220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221220210 is a deficient number, since it is larger than the sum of its proper divisors (8978676646).

11221220210 is a wasteful number, since it uses less digits than its factorization.

11221220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94477.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11221220210 its reverse (1202212211), we get a palindrome (12423432421).

The spelling of 11221220210 in words is "eleven billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".