2121000002122 has 8 divisors (see below), whose sum is σ = 3217247194500. Its totient is φ = 1048584270624.

The previous prime is 2121000002089. The next prime is 2121000002137. The reversal of 2121000002122 is 2212000001212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2103483214921 + 17516787201 = 1450339^2 + 132351^2 .

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, 5957864997 + ... + 5957865352.

Almost surely, 2^{2121000002122} is an apocalyptic number.

2121000002122 is a deficient number, since it is larger than the sum of its proper divisors (1096247192378).

2121000002122 is a wasteful number, since it uses less digits than its factorization.

2121000002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11915730440.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2121000002122 its reverse (2212000001212), we get a palindrome (4333000003334).

The spelling of 2121000002122 in words is "two trillion, one hundred twenty-one billion, two thousand, one hundred twenty-two".