11112211222100 has 36 divisors (see below), whose sum is σ = 24113715428124. Its totient is φ = 4444844474880.

The previous prime is 11112211222069. The next prime is 11112211222127. The reversal of 11112211222100 is 122211221111.

It can be written as a sum of positive squares in 6 ways, for example, as 24816331024 + 11087394891076 = 157532^2 + 3329774^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12291164 + ... + 13164236.

It is an arithmetic number, because the mean of its divisors is an integer number (669825428559).

Almost surely, 2^{11112211222100} is an apocalyptic number.

11112211222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112211222100 is an abundant number, since it is smaller than the sum of its proper divisors (13001504206024).

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

11112211222100 is a wasteful number, since it uses less digits than its factorization.

11112211222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000364 (or 1000357 counting only the distinct ones).

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

Adding to 11112211222100 its reverse (122211221111), we get a palindrome (11234422443211).

The spelling of 11112211222100 in words is "eleven trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-two thousand, one hundred".