101210121110221 has 2 divisors, whose sum is σ = 101210121110222. Its totient is φ = 101210121110220.

The previous prime is 101210121110159. The next prime is 101210121110281. The reversal of 101210121110221 is 122011121012101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58636923375625 + 42573197734596 = 7657475^2 + 6524814^2 .

It is a cyclic number.

It is not a de Polignac number, because 101210121110221 - 2³⁷ = 101072682156749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101210121110195 and 101210121110204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101210121110281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605060555110 + 50605060555111.

It is an arithmetic number, because the mean of its divisors is an integer number (50605060555111).

Almost surely, 2^{101210121110221} is an apocalyptic number.

It is an amenable number.

101210121110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101210121110221 is an equidigital number, since it uses as much as digits as its factorization.

101210121110221 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 101210121110221 its reverse (122011121012101), we get a palindrome (223221242122322).

The spelling of 101210121110221 in words is "one hundred one trillion, two hundred ten billion, one hundred twenty-one million, one hundred ten thousand, two hundred twenty-one".