10111020112021 has 2 divisors, whose sum is σ = 10111020112022. Its totient is φ = 10111020112020.

The previous prime is 10111020112013. The next prime is 10111020112049. The reversal of 10111020112021 is 12021102011101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5188878523921 + 4922141588100 = 2277911^2 + 2218590^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111020112021 - 2³ = 10111020112013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10111020111992 and 10111020112010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10111020112091) 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 as a sum of consecutive naturals, namely, 5055510056010 + 5055510056011.

It is an arithmetic number, because the mean of its divisors is an integer number (5055510056011).

Almost surely, 2^{10111020112021} is an apocalyptic number.

It is an amenable number.

10111020112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111020112021 is an equidigital number, since it uses as much as digits as its factorization.

10111020112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10111020112021 its reverse (12021102011101), we get a palindrome (22132122123122).

The spelling of 10111020112021 in words is "ten trillion, one hundred eleven billion, twenty million, one hundred twelve thousand, twenty-one".