2121120231332 has 12 divisors (see below), whose sum is σ = 3753667825740. Its totient is φ = 1048643709696.

The previous prime is 2121120231331. The next prime is 2121120231359. The reversal of 2121120231332 is 2331320211212.

It can be written as a sum of positive squares in 2 ways, for example, as 269925967936 + 1851194263396 = 519544^2 + 1360586^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2121120231298 and 2121120231307.

It is not an unprimeable number, because it can be changed into a prime (2121120231331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2979101093 + ... + 2979101804.

It is an arithmetic number, because the mean of its divisors is an integer number (312805652145).

Almost surely, 2^{2121120231332} is an apocalyptic number.

It is an amenable number.

2121120231332 is a deficient number, since it is larger than the sum of its proper divisors (1632547594408).

2121120231332 is a wasteful number, since it uses less digits than its factorization.

2121120231332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5958202990 (or 5958202988 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2121120231332 its reverse (2331320211212), we get a palindrome (4452440442544).

The spelling of 2121120231332 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred thirty-one thousand, three hundred thirty-two".