2001121002002 has 8 divisors (see below), whose sum is σ = 3001694655036. Its totient is φ = 1000556116992.

The previous prime is 2001121001987. The next prime is 2001121002047. The reversal of 2001121002002 is 2002001211002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1117124277481 + 883996724521 = 1056941^2 + 940211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588163 + ... + 2554310.

Almost surely, 2^{2001121002002} is an apocalyptic number.

2001121002002 is a deficient number, since it is larger than the sum of its proper divisors (1000573653034).

2001121002002 is a wasteful number, since it uses less digits than its factorization.

2001121002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384012.

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

Adding to 2001121002002 its reverse (2002001211002), we get a palindrome (4003122213004).

The spelling of 2001121002002 in words is "two trillion, one billion, one hundred twenty-one million, two thousand, two".