22111121211202 has 4 divisors (see below), whose sum is σ = 33166681816806. Its totient is φ = 11055560605600.

The previous prime is 22111121211167. The next prime is 22111121211233. The reversal of 22111121211202 is 20211212111122.

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., 21201503131081 + 909618080121 = 4604509^2 + 953739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22111121211202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527780302799 + ... + 5527780302802.

Almost surely, 2^{22111121211202} is an apocalyptic number.

22111121211202 is a deficient number, since it is larger than the sum of its proper divisors (11055560605604).

22111121211202 is a wasteful number, since it uses less digits than its factorization.

22111121211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055560605603.

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

Adding to 22111121211202 its reverse (20211212111122), we get a palindrome (42322333322324).

The spelling of 22111121211202 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-one million, two hundred eleven thousand, two hundred two".