1000222202121 has 16 divisors (see below), whose sum is σ = 1335296112960. Its totient is φ = 665981798400.

The previous prime is 1000222202099. The next prime is 1000222202173. The reversal of 1000222202121 is 1212022220001.

It is a de Polignac number, because none of the positive numbers 2^k-1000222202121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000222202121.

It is not an unprimeable number, because it can be changed into a prime (1000222202191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17951121 + ... + 18006753.

It is an arithmetic number, because the mean of its divisors is an integer number (83456007060).

Almost surely, 2^{1000222202121} is an apocalyptic number.

It is an amenable number.

1000222202121 is a deficient number, since it is larger than the sum of its proper divisors (335073910839).

1000222202121 is an equidigital number, since it uses as much as digits as its factorization.

1000222202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63016.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1000222202121 its reverse (1212022220001), we get a palindrome (2212244422122).

The spelling of 1000222202121 in words is "one trillion, two hundred twenty-two million, two hundred two thousand, one hundred twenty-one".