11112002212121 has 4 divisors (see below), whose sum is σ = 11112024904500. Its totient is φ = 11111979519744.

The previous prime is 11112002212111. The next prime is 11112002212187. The reversal of 11112002212121 is 12121220021111.

11112002212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6835113504025 + 4276888708096 = 2614405^2 + 2068064^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112002212121 - 2¹⁴ = 11112002195737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11112002212121.

It is not an unprimeable number, because it can be changed into a prime (11112002212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10595096 + ... + 11596553.

It is an arithmetic number, because the mean of its divisors is an integer number (2778006226125).

Almost surely, 2^{11112002212121} is an apocalyptic number.

It is an amenable number.

11112002212121 is a deficient number, since it is larger than the sum of its proper divisors (22692379).

11112002212121 is an equidigital number, since it uses as much as digits as its factorization.

11112002212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22692378.

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

Adding to 11112002212121 its reverse (12121220021111), we get a palindrome (23233222233232).

The spelling of 11112002212121 in words is "eleven trillion, one hundred twelve billion, two million, two hundred twelve thousand, one hundred twenty-one".