10002120212923 has 2 divisors, whose sum is σ = 10002120212924. Its totient is φ = 10002120212922.

The previous prime is 10002120212921. The next prime is 10002120212927. The reversal of 10002120212923 is 32921202120001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10002120212923 - 2¹ = 10002120212921 is a prime.

Together with 10002120212921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10002120212921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001060106461 + 5001060106462.

It is an arithmetic number, because the mean of its divisors is an integer number (5001060106462).

Almost surely, 2^{10002120212923} is an apocalyptic number.

10002120212923 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002120212923 is an equidigital number, since it uses as much as digits as its factorization.

10002120212923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 10002120212923 its reverse (32921202120001), we get a palindrome (42923322332924).

The spelling of 10002120212923 in words is "ten trillion, two billion, one hundred twenty million, two hundred twelve thousand, nine hundred twenty-three".