10212423521 has 4 divisors (see below), whose sum is σ = 10356260544. Its totient is φ = 10068586500.

The previous prime is 10212423517. The next prime is 10212423569. The reversal of 10212423521 is 12532421201.

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 10212423521 - 2² = 10212423517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212423511) 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, 71918405 + ... + 71918546.

It is an arithmetic number, because the mean of its divisors is an integer number (2589065136).

Almost surely, 2^10212423521 is an apocalyptic number.

It is an amenable number.

10212423521 is a deficient number, since it is larger than the sum of its proper divisors (143837023).

10212423521 is an equidigital number, since it uses as much as digits as its factorization.

10212423521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143837022.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 10212423521 its reverse (12532421201), we get a palindrome (22744844722).

The spelling of 10212423521 in words is "ten billion, two hundred twelve million, four hundred twenty-three thousand, five hundred twenty-one".