11001221221210 has 64 divisors (see below), whose sum is σ = 22843134010368. Its totient is φ = 3776973120000.

The previous prime is 11001221221189. The next prime is 11001221221219. The reversal of 11001221221210 is 1212212210011.

It is not an unprimeable number, because it can be changed into a prime (11001221221219) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 39203661 + ... + 39483280.

It is an arithmetic number, because the mean of its divisors is an integer number (356923968912).

Almost surely, 2^{11001221221210} is an apocalyptic number.

11001221221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11001221221210 is an abundant number, since it is smaller than the sum of its proper divisors (11841912789158).

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

11001221221210 is a wasteful number, since it uses less digits than its factorization.

11001221221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78687031.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11001221221210 its reverse (1212212210011), we get a palindrome (12213433431221).

The spelling of 11001221221210 in words is "eleven trillion, one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".