202011121321 has 4 divisors (see below), whose sum is σ = 205026212752. Its totient is φ = 198996029892.

The previous prime is 202011121289. The next prime is 202011121327. The reversal of 202011121321 is 123121110202.

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 202011121321 - 2⁵ = 202011121289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202011121295 and 202011121304.

It is not an unprimeable number, because it can be changed into a prime (202011121327) 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, 1507545615 + ... + 1507545748.

It is an arithmetic number, because the mean of its divisors is an integer number (51256553188).

Almost surely, 2^202011121321 is an apocalyptic number.

It is an amenable number.

202011121321 is a deficient number, since it is larger than the sum of its proper divisors (3015091431).

202011121321 is an equidigital number, since it uses as much as digits as its factorization.

202011121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015091430.

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

Adding to 202011121321 its reverse (123121110202), we get a palindrome (325132231523).

The spelling of 202011121321 in words is "two hundred two billion, eleven million, one hundred twenty-one thousand, three hundred twenty-one".