111021102012101 has 2 divisors, whose sum is σ = 111021102012102. Its totient is φ = 111021102012100.

The previous prime is 111021102012071. The next prime is 111021102012133. The reversal of 111021102012101 is 101210201120111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110879425804900 + 141676207201 = 10529930^2 + 376399^2 .

It is a cyclic number.

It is not a de Polignac number, because 111021102012101 - 2¹⁰ = 111021102011077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111021102012701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510551006050 + 55510551006051.

It is an arithmetic number, because the mean of its divisors is an integer number (55510551006051).

Almost surely, 2^{111021102012101} is an apocalyptic number.

It is an amenable number.

111021102012101 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021102012101 is an equidigital number, since it uses as much as digits as its factorization.

111021102012101 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 14.

Adding to 111021102012101 its reverse (101210201120111), we get a palindrome (212231303132212).

The spelling of 111021102012101 in words is "one hundred eleven trillion, twenty-one billion, one hundred two million, twelve thousand, one hundred one".