2221011202122 has 24 divisors (see below), whose sum is σ = 4859836396740. Its totient is φ = 733006996800.

The previous prime is 2221011202103. The next prime is 2221011202129. The reversal of 2221011202122 is 2212021101222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2203826351841 + 17184850281 = 1484529^2 + 131091^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2221011202095 and 2221011202104.

It is not an unprimeable number, because it can be changed into a prime (2221011202129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610837347 + ... + 610840982.

Almost surely, 2^{2221011202122} is an apocalyptic number.

2221011202122 is an abundant number, since it is smaller than the sum of its proper divisors (2638825194618).

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

2221011202122 is a wasteful number, since it uses less digits than its factorization.

2221011202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221678438 (or 1221678435 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2221011202122 its reverse (2212021101222), we get a palindrome (4433032303344).

The spelling of 2221011202122 in words is "two trillion, two hundred twenty-one billion, eleven million, two hundred two thousand, one hundred twenty-two".