2121100122122 has 8 divisors (see below), whose sum is σ = 3181660290756. Its totient is φ = 1060546691872.

The previous prime is 2121100122101. The next prime is 2121100122139. The reversal of 2121100122122 is 2212210011212.

It can be written as a sum of positive squares in 2 ways, for example, as 2003218453201 + 117881668921 = 1415351^2 + 343339^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2121100122122.

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, 806003 + ... + 2211750.

Almost surely, 2^{2121100122122} is an apocalyptic number.

2121100122122 is a deficient number, since it is larger than the sum of its proper divisors (1060560168634).

2121100122122 is a wasteful number, since it uses less digits than its factorization.

2121100122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369192.

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

Adding to 2121100122122 its reverse (2212210011212), we get a palindrome (4333310133334).

The spelling of 2121100122122 in words is "two trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-two thousand, one hundred twenty-two".