10111022021 has 16 divisors (see below), whose sum is σ = 10478318400. Its totient is φ = 9750077568.

The previous prime is 10111022011. The next prime is 10111022039. The reversal of 10111022021 is 12022011101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111022021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10111021993 and 10111022011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3170990 + ... + 3174176.

It is an arithmetic number, because the mean of its divisors is an integer number (654894900).

Almost surely, 2^10111022021 is an apocalyptic number.

It is an amenable number.

10111022021 is a deficient number, since it is larger than the sum of its proper divisors (367296379).

10111022021 is an equidigital number, since it uses as much as digits as its factorization.

10111022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148.

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

Adding to 10111022021 its reverse (12022011101), we get a palindrome (22133033122).

The spelling of 10111022021 in words is "ten billion, one hundred eleven million, twenty-two thousand, twenty-one".