10202311121 has 4 divisors (see below), whose sum is σ = 10202959872. Its totient is φ = 10201662372.

The previous prime is 10202311111. The next prime is 10202311123. The reversal of 10202311121 is 12111320201.

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 10202311121 - 2¹⁸ = 10202048977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202311096 and 10202311105.

It is not an unprimeable number, because it can be changed into a prime (10202311123) 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, 300185 + ... + 332438.

It is an arithmetic number, because the mean of its divisors is an integer number (2550739968).

Almost surely, 2^10202311121 is an apocalyptic number.

It is an amenable number.

10202311121 is a deficient number, since it is larger than the sum of its proper divisors (648751).

10202311121 is an equidigital number, since it uses as much as digits as its factorization.

10202311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648750.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10202311121 its reverse (12111320201), we get a palindrome (22313631322).

The spelling of 10202311121 in words is "ten billion, two hundred two million, three hundred eleven thousand, one hundred twenty-one".