11311220221210 has 128 divisors (see below), whose sum is σ = 25154201479680. Its totient is φ = 3566191463424.

The previous prime is 11311220221207. The next prime is 11311220221241. The reversal of 11311220221210 is 1212202211311.

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 63 ways as a sum of consecutive naturals, for example, 352699056 + ... + 352731124.

It is an arithmetic number, because the mean of its divisors is an integer number (196517199060).

Almost surely, 2^{11311220221210} is an apocalyptic number.

11311220221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11311220221210 is an abundant number, since it is smaller than the sum of its proper divisors (13842981258470).

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

11311220221210 is a wasteful number, since it uses less digits than its factorization.

11311220221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33560.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11311220221210 its reverse (1212202211311), we get a palindrome (12523422432521).

The spelling of 11311220221210 in words is "eleven trillion, three hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, two hundred ten".