2121121221002 has 8 divisors (see below), whose sum is σ = 3636207807456. Its totient is φ = 909051951852.

The previous prime is 2121121220987. The next prime is 2121121221047. The reversal of 2121121221002 is 2001221211212.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75754329308 + ... + 75754329335.

It is an arithmetic number, because the mean of its divisors is an integer number (454525975932).

Almost surely, 2^{2121121221002} is an apocalyptic number.

2121121221002 is a deficient number, since it is larger than the sum of its proper divisors (1515086586454).

2121121221002 is a wasteful number, since it uses less digits than its factorization.

2121121221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151508658652.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2121121221002 its reverse (2001221211212), we get a palindrome (4122342432214).

The spelling of 2121121221002 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, two".