2121132202321 has 12 divisors (see below), whose sum is σ = 2331820503936. Its totient is φ = 1928030655320.

The previous prime is 2121132202291. The next prime is 2121132202333. The reversal of 2121132202321 is 1232022311212.

It is not a de Polignac number, because 2121132202321 - 2⁷ = 2121132202193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121132202292 and 2121132202301.

It is not an unprimeable number, because it can be changed into a prime (2121132202351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367465 + ... + 2092198.

It is an arithmetic number, because the mean of its divisors is an integer number (194318375328).

Almost surely, 2^{2121132202321} is an apocalyptic number.

It is an amenable number.

2121132202321 is a deficient number, since it is larger than the sum of its proper divisors (210688301615).

2121132202321 is a wasteful number, since it uses less digits than its factorization.

2121132202321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466812 (or 2466801 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2121132202321 its reverse (1232022311212), we get a palindrome (3353154513533).

The spelling of 2121132202321 in words is "two trillion, one hundred twenty-one billion, one hundred thirty-two million, two hundred two thousand, three hundred twenty-one".