2121020000121 has 16 divisors (see below), whose sum is σ = 3115665747648. Its totient is φ = 1272739272000.

The previous prime is 2121020000119. The next prime is 2121020000131. The reversal of 2121020000121 is 1210000201212.

It is not a de Polignac number, because 2121020000121 - 2¹ = 2121020000119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121020000097 and 2121020000106.

It is not an unprimeable number, because it can be changed into a prime (2121020000101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318181486 + ... + 318188151.

It is an arithmetic number, because the mean of its divisors is an integer number (194729109228).

Almost surely, 2^{2121020000121} is an apocalyptic number.

It is an amenable number.

2121020000121 is a deficient number, since it is larger than the sum of its proper divisors (994645747527).

2121020000121 is a wasteful number, since it uses less digits than its factorization.

2121020000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636369752.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2121020000121 its reverse (1210000201212), we get a palindrome (3331020201333).

The spelling of 2121020000121 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one", and thus it is an aban number.