10120311221 has 8 divisors (see below), whose sum is σ = 11020303200. Its totient is φ = 9257053680.

The previous prime is 10120311203. The next prime is 10120311239. The reversal of 10120311221 is 12211302101.

It is an interprime number because it is at equal distance from previous prime (10120311203) and next prime (10120311239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10120311221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10120311196 and 10120311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120311281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9183035 + ... + 9184136.

It is an arithmetic number, because the mean of its divisors is an integer number (1377537900).

Almost surely, 2^10120311221 is an apocalyptic number.

It is an amenable number.

10120311221 is a deficient number, since it is larger than the sum of its proper divisors (899991979).

10120311221 is a wasteful number, since it uses less digits than its factorization.

10120311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367219.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10120311221 its reverse (12211302101), we get a palindrome (22331613322).

The spelling of 10120311221 in words is "ten billion, one hundred twenty million, three hundred eleven thousand, two hundred twenty-one".