11202121212122 has 4 divisors (see below), whose sum is σ = 16803181818186. Its totient is φ = 5601060606060.

The previous prime is 11202121212103. The next prime is 11202121212169. The reversal of 11202121212122 is 22121212120211.

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., 9491149954441 + 1710971257681 = 3080771^2 + 1308041^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11202121212094 and 11202121212103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800530303029 + ... + 2800530303032.

Almost surely, 2^{11202121212122} is an apocalyptic number.

11202121212122 is a deficient number, since it is larger than the sum of its proper divisors (5601060606064).

11202121212122 is an equidigital number, since it uses as much as digits as its factorization.

11202121212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601060606063.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11202121212122 its reverse (22121212120211), we get a palindrome (33323333332333).

The spelling of 11202121212122 in words is "eleven trillion, two hundred two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty-two".