10313111121221 has 4 divisors (see below), whose sum is σ = 10319014449312. Its totient is φ = 10307207793132.

The previous prime is 10313111121193. The next prime is 10313111121293. The reversal of 10313111121221 is 12212111131301.

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 10313111121221 - 2¹⁴ = 10313111104837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10313111121193 and 10313111121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10313111121121) 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, 2951661425 + ... + 2951664918.

It is an arithmetic number, because the mean of its divisors is an integer number (2579753612328).

Almost surely, 2^{10313111121221} is an apocalyptic number.

It is an amenable number.

10313111121221 is a deficient number, since it is larger than the sum of its proper divisors (5903328091).

10313111121221 is an equidigital number, since it uses as much as digits as its factorization.

10313111121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5903328090.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 10313111121221 its reverse (12212111131301), we get a palindrome (22525222252522).

The spelling of 10313111121221 in words is "ten trillion, three hundred thirteen billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty-one".