11112211111210 has 128 divisors (see below), whose sum is σ = 23993605693440. Its totient is φ = 3657675571200.

The previous prime is 11112211111189. The next prime is 11112211111219. The reversal of 11112211111210 is 1211111221111.

It is not an unprimeable number, because it can be changed into a prime (11112211111219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13538455 + ... + 14335765.

It is an arithmetic number, because the mean of its divisors is an integer number (187450044480).

Almost surely, 2^{11112211111210} is an apocalyptic number.

11112211111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11112211111210 is an abundant number, since it is smaller than the sum of its proper divisors (12881394582230).

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

11112211111210 is a wasteful number, since it uses less digits than its factorization.

11112211111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797632.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11112211111210 its reverse (1211111221111), we get a palindrome (12323322332321).

The spelling of 11112211111210 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, one hundred eleven thousand, two hundred ten".