111010210012021 has 2 divisors, whose sum is σ = 111010210012022. Its totient is φ = 111010210012020.

The previous prime is 111010210012003. The next prime is 111010210012049. The reversal of 111010210012021 is 120210012010111.

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., 78952305731121 + 32057904280900 = 8885511^2 + 5661970^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010210012021 - 2⁷ = 111010210011893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111010210011992 and 111010210012010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111010210012061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505105006010 + 55505105006011.

It is an arithmetic number, because the mean of its divisors is an integer number (55505105006011).

Almost surely, 2^{111010210012021} is an apocalyptic number.

It is an amenable number.

111010210012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010210012021 is an equidigital number, since it uses as much as digits as its factorization.

111010210012021 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 111010210012021 its reverse (120210012010111), we get a palindrome (231220222022132).

The spelling of 111010210012021 in words is "one hundred eleven trillion, ten billion, two hundred ten million, twelve thousand, twenty-one".