1000002120122 has 4 divisors (see below), whose sum is σ = 1500003180186. Its totient is φ = 500001060060.

The previous prime is 1000002120109. The next prime is 1000002120181. The reversal of 1000002120122 is 2210212000001.

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., 725854584841 + 274147535281 = 851971^2 + 523591^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250000530029 + ... + 250000530032.

Almost surely, 2^{1000002120122} is an apocalyptic number.

1000002120122 is a deficient number, since it is larger than the sum of its proper divisors (500001060064).

1000002120122 is an equidigital number, since it uses as much as digits as its factorization.

1000002120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500001060063.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000002120122 its reverse (2210212000001), we get a palindrome (3210214120123).

The spelling of 1000002120122 in words is "one trillion, two million, one hundred twenty thousand, one hundred twenty-two".