2130121301221 has 8 divisors (see below), whose sum is σ = 2255447954880. Its totient is φ = 2004797469888.

The previous prime is 2130121301201. The next prime is 2130121301233. The reversal of 2130121301221 is 1221031210312.

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

It is a cyclic number.

It is not a de Polignac number, because 2130121301221 - 2¹⁵ = 2130121268453 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 (2130121301201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 960760 + ... + 2276686.

It is an arithmetic number, because the mean of its divisors is an integer number (281930994360).

Almost surely, 2^{2130121301221} is an apocalyptic number.

It is an amenable number.

2130121301221 is a deficient number, since it is larger than the sum of its proper divisors (125326653659).

2130121301221 is a wasteful number, since it uses less digits than its factorization.

2130121301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411163.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2130121301221 its reverse (1221031210312), we get a palindrome (3351152511533).

Subtracting from 2130121301221 its reverse (1221031210312), we obtain a palindrome (909090090909).

It can be divided in two parts, 2130121 and 301221, that added together give a palindrome (2431342).

The spelling of 2130121301221 in words is "two trillion, one hundred thirty billion, one hundred twenty-one million, three hundred one thousand, two hundred twenty-one".