2121020121301 has 4 divisors (see below), whose sum is σ = 2122536220000. Its totient is φ = 2119504022604.

The previous prime is 2121020121287. The next prime is 2121020121323. The reversal of 2121020121301 is 1031210201212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2121020121301 - 2⁷ = 2121020121173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121020121331) 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 3 ways as a sum of consecutive naturals, for example, 758047251 + ... + 758050048.

It is an arithmetic number, because the mean of its divisors is an integer number (530634055000).

Almost surely, 2^{2121020121301} is an apocalyptic number.

It is an amenable number.

2121020121301 is a deficient number, since it is larger than the sum of its proper divisors (1516098699).

2121020121301 is a wasteful number, since it uses less digits than its factorization.

2121020121301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516098698.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 2121020121301 its reverse (1031210201212), we get a palindrome (3152230322513).

The spelling of 2121020121301 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, three hundred one".