111302011021 has 2 divisors, whose sum is σ = 111302011022. Its totient is φ = 111302011020.

The previous prime is 111302011019. The next prime is 111302011081. The reversal of 111302011021 is 120110203111.

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., 81678782025 + 29623228996 = 285795^2 + 172114^2 .

It is a cyclic number.

It is not a de Polignac number, because 111302011021 - 2¹ = 111302011019 is a prime.

Together with 111302011019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 111302010992 and 111302011010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111302011081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55651005510 + 55651005511.

It is an arithmetic number, because the mean of its divisors is an integer number (55651005511).

Almost surely, 2^111302011021 is an apocalyptic number.

It is an amenable number.

111302011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111302011021 is an equidigital number, since it uses as much as digits as its factorization.

111302011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111302011021 its reverse (120110203111), we get a palindrome (231412214132).

The spelling of 111302011021 in words is "one hundred eleven billion, three hundred two million, eleven thousand, twenty-one".