2221121111202 has 48 divisors (see below), whose sum is σ = 5500066620672. Its totient is φ = 634588992000.

The previous prime is 2221121111189. The next prime is 2221121111203. The reversal of 2221121111202 is 2021111211222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2221121111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4918338 + ... + 5350914.

It is an arithmetic number, because the mean of its divisors is an integer number (114584721264).

Almost surely, 2^{2221121111202} is an apocalyptic number.

2221121111202 is an abundant number, since it is smaller than the sum of its proper divisors (3278945509470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221121111202 is a wasteful number, since it uses less digits than its factorization.

2221121111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473343 (or 473340 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2221121111202 its reverse (2021111211222), we get a palindrome (4242232322424).

The spelling of 2221121111202 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, two hundred two".