312121002002 has 16 divisors (see below), whose sum is σ = 492838486560. Its totient is φ = 147842034912.

The previous prime is 312121001923. The next prime is 312121002041. The reversal of 312121002002 is 200200121213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253633 + ... + 1481835.

It is an arithmetic number, because the mean of its divisors is an integer number (30802405410).

Almost surely, 2^312121002002 is an apocalyptic number.

312121002002 is a deficient number, since it is larger than the sum of its proper divisors (180717484558).

312121002002 is a wasteful number, since it uses less digits than its factorization.

312121002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264217.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 312121002002 its reverse (200200121213), we get a palindrome (512321123215).

The spelling of 312121002002 in words is "three hundred twelve billion, one hundred twenty-one million, two thousand, two".