20132121321321 has 4 divisors (see below), whose sum is σ = 26842828428432. Its totient is φ = 13421414214212.

The previous prime is 20132121321317. The next prime is 20132121321409. The reversal of 20132121321321 is 12312312123102.

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 20132121321321 - 2² = 20132121321317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20132121321291 and 20132121321300.

It is not an unprimeable number, because it can be changed into a prime (20132121321311) 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, 3355353553551 + ... + 3355353553556.

It is an arithmetic number, because the mean of its divisors is an integer number (6710707107108).

Almost surely, 2^{20132121321321} is an apocalyptic number.

It is an amenable number.

20132121321321 is a deficient number, since it is larger than the sum of its proper divisors (6710707107111).

20132121321321 is an equidigital number, since it uses as much as digits as its factorization.

20132121321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6710707107110.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20132121321321 its reverse (12312312123102), we get a palindrome (32444433444423).

The spelling of 20132121321321 in words is "twenty trillion, one hundred thirty-two billion, one hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-one".