11112211112210 has 32 divisors (see below), whose sum is σ = 21544561446912. Its totient is φ = 4102214523840.

The previous prime is 11112211112069. The next prime is 11112211112221. The reversal of 11112211112210 is 1221111221111.

It is a super-2 number, since 2×11112211112210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7163474 + ... + 8575533.

It is an arithmetic number, because the mean of its divisors is an integer number (673267545216).

Almost surely, 2^{11112211112210} is an apocalyptic number.

11112211112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11112211112210 is a deficient number, since it is larger than the sum of its proper divisors (10432350334702).

11112211112210 is a wasteful number, since it uses less digits than its factorization.

11112211112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15744458.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11112211112210 its reverse (1221111221111), we get a palindrome (12333322333321).

The spelling of 11112211112210 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, one hundred twelve thousand, two hundred ten".