1012211111101 has 2 divisors, whose sum is σ = 1012211111102. Its totient is φ = 1012211111100.

The previous prime is 1012211111077. The next prime is 1012211111113. The reversal of 1012211111101 is 1011111122101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771061366201 + 241149744900 = 878101^2 + 491070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012211111101 - 2¹¹ = 1012211109053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012211111141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506105555550 + 506105555551.

It is an arithmetic number, because the mean of its divisors is an integer number (506105555551).

Almost surely, 2^{1012211111101} is an apocalyptic number.

It is an amenable number.

1012211111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012211111101 is an equidigital number, since it uses as much as digits as its factorization.

1012211111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1012211111101 its reverse (1011111122101), we get a palindrome (2023322233202).

The spelling of 1012211111101 in words is "one trillion, twelve billion, two hundred eleven million, one hundred eleven thousand, one hundred one".