11112222121102 has 8 divisors (see below), whose sum is σ = 16668347702976. Its totient is φ = 5556106220112.

The previous prime is 11112222121081. The next prime is 11112222121139. The reversal of 11112222121102 is 20112122221111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11112222121102.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2257938 + ... + 5227114.

It is an arithmetic number, because the mean of its divisors is an integer number (2083543462872).

Almost surely, 2^{11112222121102} is an apocalyptic number.

11112222121102 is a deficient number, since it is larger than the sum of its proper divisors (5556125581874).

11112222121102 is a wasteful number, since it uses less digits than its factorization.

11112222121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840442.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11112222121102 its reverse (20112122221111), we get a palindrome (31224344342213).

The spelling of 11112222121102 in words is "eleven trillion, one hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred two".