10022111021 has 8 divisors (see below), whose sum is σ = 10914314040. Its totient is φ = 9147232512.

The previous prime is 10022110991. The next prime is 10022111027. The reversal of 10022111021 is 12011122001.

It can be written as a sum of positive squares in 4 ways, for example, as 484440100 + 9537670921 = 22010^2 + 97661^2 .

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-10022111021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10022110993 and 10022111011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10022111027) 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, 4329920 + ... + 4332233.

It is an arithmetic number, because the mean of its divisors is an integer number (1364289255).

Almost surely, 2^10022111021 is an apocalyptic number.

It is an amenable number.

10022111021 is a deficient number, since it is larger than the sum of its proper divisors (892203019).

10022111021 is an equidigital number, since it uses as much as digits as its factorization.

10022111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8662255.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10022111021 its reverse (12011122001), we get a palindrome (22033233022).

The spelling of 10022111021 in words is "ten billion, twenty-two million, one hundred eleven thousand, twenty-one".