10312121132213 has 4 divisors (see below), whose sum is σ = 10313712269868. Its totient is φ = 10310529994560.

The previous prime is 10312121132179. The next prime is 10312121132219. The reversal of 10312121132213 is 31223112121301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10159378514884 + 152742617329 = 3187378^2 + 390823^2 .

It is a cyclic number.

It is not a de Polignac number, because 10312121132213 - 2¹² = 10312121128117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10312121132219) 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, 795559106 + ... + 795572067.

It is an arithmetic number, because the mean of its divisors is an integer number (2578428067467).

Almost surely, 2^{10312121132213} is an apocalyptic number.

It is an amenable number.

10312121132213 is a deficient number, since it is larger than the sum of its proper divisors (1591137655).

10312121132213 is an equidigital number, since it uses as much as digits as its factorization.

10312121132213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591137654.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 10312121132213 its reverse (31223112121301), we get a palindrome (41535233253514).

The spelling of 10312121132213 in words is "ten trillion, three hundred twelve billion, one hundred twenty-one million, one hundred thirty-two thousand, two hundred thirteen".