112021111021 has 2 divisors, whose sum is σ = 112021111022. Its totient is φ = 112021111020.

The previous prime is 112021111009. The next prime is 112021111049. The reversal of 112021111021 is 120111120211.

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., 111562680100 + 458430921 = 334010^2 + 21411^2 .

It is an emirp because it is prime and its reverse (120111120211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112021111021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112021110992 and 112021111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112021111051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56010555510 + 56010555511.

It is an arithmetic number, because the mean of its divisors is an integer number (56010555511).

Almost surely, 2^112021111021 is an apocalyptic number.

It is an amenable number.

112021111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112021111021 is an equidigital number, since it uses as much as digits as its factorization.

112021111021 is an evil number, because the sum of its binary digits is even.

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

Adding to 112021111021 its reverse (120111120211), we get a palindrome (232132231232).

The spelling of 112021111021 in words is "one hundred twelve billion, twenty-one million, one hundred eleven thousand, twenty-one".