10011212222321 has 4 divisors (see below), whose sum is σ = 10012006082544. Its totient is φ = 10010418362100.

The previous prime is 10011212222311. The next prime is 10011212222371. The reversal of 10011212222321 is 12322221211001.

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 a de Polignac number, because none of the positive numbers 2^k-10011212222321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011212222293 and 10011212222302.

It is not an unprimeable number, because it can be changed into a prime (10011212222311) 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, 396911195 + ... + 396936416.

It is an arithmetic number, because the mean of its divisors is an integer number (2503001520636).

Almost surely, 2^{10011212222321} is an apocalyptic number.

It is an amenable number.

10011212222321 is a deficient number, since it is larger than the sum of its proper divisors (793860223).

10011212222321 is an equidigital number, since it uses as much as digits as its factorization.

10011212222321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793860222.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 10011212222321 its reverse (12322221211001), we get a palindrome (22333433433322).

The spelling of 10011212222321 in words is "ten trillion, eleven billion, two hundred twelve million, two hundred twenty-two thousand, three hundred twenty-one".