10121020313 has 4 divisors (see below), whose sum is σ = 10121438928. Its totient is φ = 10120601700.

The previous prime is 10121020309. The next prime is 10121020319. The reversal of 10121020313 is 31302012101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31302012101 = 449 ⋅69714949.

It is a cyclic number.

It is not a de Polignac number, because 10121020313 - 2² = 10121020309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10121020319) 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, 170663 + ... + 222188.

It is an arithmetic number, because the mean of its divisors is an integer number (2530359732).

Almost surely, 2^10121020313 is an apocalyptic number.

It is an amenable number.

10121020313 is a deficient number, since it is larger than the sum of its proper divisors (418615).

10121020313 is an equidigital number, since it uses as much as digits as its factorization.

10121020313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418614.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10121020313 its reverse (31302012101), we get a palindrome (41423032414).

The spelling of 10121020313 in words is "ten billion, one hundred twenty-one million, twenty thousand, three hundred thirteen".