2112221220202 has 4 divisors (see below), whose sum is σ = 3168331830306. Its totient is φ = 1056110610100.

The previous prime is 2112221220143. The next prime is 2112221220203. The reversal of 2112221220202 is 2020221222112.

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., 2108945832841 + 3275387361 = 1452221^2 + 57231^2 .

It is a super-2 number, since 2×2112221220202² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112221220202.

It is not an unprimeable number, because it can be changed into a prime (2112221220203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528055305049 + ... + 528055305052.

Almost surely, 2^{2112221220202} is an apocalyptic number.

2112221220202 is a deficient number, since it is larger than the sum of its proper divisors (1056110610104).

2112221220202 is a wasteful number, since it uses less digits than its factorization.

2112221220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056110610103.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2112221220202 its reverse (2020221222112), we get a palindrome (4132442442314).

The spelling of 2112221220202 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".