2123210102121 has 12 divisors (see below), whose sum is σ = 3087441984900. Its totient is φ = 1405973579040.

The previous prime is 2123210102053. The next prime is 2123210102129. The reversal of 2123210102121 is 1212010123212.

2123210102121 is a `hidden beast` number, since 212 + 321 + 0 + 10 + 2 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 276532946496 + 1846677155625 = 525864^2 + 1358925^2 .

It is not a de Polignac number, because 2123210102121 - 2⁷ = 2123210101993 is a prime.

It is a super-2 number, since 2×2123210102121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123210102094 and 2123210102103.

It is not an unprimeable number, because it can be changed into a prime (2123210102129) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 791650450 + ... + 791653131.

It is an arithmetic number, because the mean of its divisors is an integer number (257286832075).

Almost surely, 2^{2123210102121} is an apocalyptic number.

It is an amenable number.

2123210102121 is a deficient number, since it is larger than the sum of its proper divisors (964231882779).

2123210102121 is a wasteful number, since it uses less digits than its factorization.

2123210102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583303736 (or 1583303733 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2123210102121 its reverse (1212010123212), we get a palindrome (3335220225333).

The spelling of 2123210102121 in words is "two trillion, one hundred twenty-three billion, two hundred ten million, one hundred two thousand, one hundred twenty-one".