101110211021221 has 2 divisors, whose sum is σ = 101110211021222. Its totient is φ = 101110211021220.

The previous prime is 101110211021203. The next prime is 101110211021233. The reversal of 101110211021221 is 122120112011101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54205670002500 + 46904541018721 = 7362450^2 + 6848689^2 .

It is a cyclic number.

It is not a de Polignac number, because 101110211021221 - 2²⁷ = 101110076803493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101110211021195 and 101110211021204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101110211021021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50555105510610 + 50555105510611.

It is an arithmetic number, because the mean of its divisors is an integer number (50555105510611).

Almost surely, 2^{101110211021221} is an apocalyptic number.

It is an amenable number.

101110211021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101110211021221 is an equidigital number, since it uses as much as digits as its factorization.

101110211021221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 101110211021221 its reverse (122120112011101), we get a palindrome (223230323032322).

The spelling of 101110211021221 in words is "one hundred one trillion, one hundred ten billion, two hundred eleven million, twenty-one thousand, two hundred twenty-one".