11221121102210 has 16 divisors (see below), whose sum is σ = 20198061660600. Its totient is φ = 4488438734976.

The previous prime is 11221121102189. The next prime is 11221121102221. The reversal of 11221121102210 is 1220112112211.

It can be written as a sum of positive squares in 4 ways, for example, as 9353572006321 + 1867549095889 = 3058361^2 + 1366583^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5315336 + ... + 7120044.

Almost surely, 2^{11221121102210} is an apocalyptic number.

11221121102210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11221121102210 is a deficient number, since it is larger than the sum of its proper divisors (8976940558390).

11221121102210 is a wasteful number, since it uses less digits than its factorization.

11221121102210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426485.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221121102210 its reverse (1220112112211), we get a palindrome (12441233214421).

The spelling of 11221121102210 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred two thousand, two hundred ten".