11122112121202 has 4 divisors (see below), whose sum is σ = 16683168181806. Its totient is φ = 5561056060600.

The previous prime is 11122112121179. The next prime is 11122112121209. The reversal of 11122112121202 is 20212121122111.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 5775894149481 + 5346217971721 = 2403309^2 + 2312189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11122112121202.

It is not an unprimeable number, because it can be changed into a prime (11122112121209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780528030299 + ... + 2780528030302.

Almost surely, 2^{11122112121202} is an apocalyptic number.

11122112121202 is a deficient number, since it is larger than the sum of its proper divisors (5561056060604).

11122112121202 is an equidigital number, since it uses as much as digits as its factorization.

11122112121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561056060603.

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

Adding to 11122112121202 its reverse (20212121122111), we get a palindrome (31334233243313).

Subtracting 11122112121202 from its reverse (20212121122111), we obtain a palindrome (9090009000909).

The spelling of 11122112121202 in words is "eleven trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, two hundred two".