2001002122 has 24 divisors (see below), whose sum is σ = 3497757120. Its totient is φ = 856046520.

The previous prime is 2001002077. The next prime is 2001002137. The reversal of 2001002122 is 2212001002.

It is a junction number, because it is equal to n+sod(n) for n = 2001002099 and 2001002108.

It is an unprimeable number.

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, 38079 + ... + 73837.

It is an arithmetic number, because the mean of its divisors is an integer number (145739880).

Almost surely, 2^2001002122 is an apocalyptic number.

2001002122 is a deficient number, since it is larger than the sum of its proper divisors (1496754998).

2001002122 is a wasteful number, since it uses less digits than its factorization.

2001002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36346 (or 36339 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001002122 is about 44732.5622114361. The cubic root of 2001002122 is about 1260.1314471919.

Adding to 2001002122 its reverse (2212001002), we get a palindrome (4213003124).

The spelling of 2001002122 in words is "two billion, one million, two thousand, one hundred twenty-two".