101222202021221 has 2 divisors, whose sum is σ = 101222202021222. Its totient is φ = 101222202021220.

The previous prime is 101222202021163. The next prime is 101222202021253. The reversal of 101222202021221 is 122120202222101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58560220576225 + 42661981444996 = 7652465^2 + 6531614^2 .

It is a cyclic number.

It is not a de Polignac number, because 101222202021221 - 2¹⁴ = 101222202004837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101222202021193 and 101222202021202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101222202023221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611101010610 + 50611101010611.

It is an arithmetic number, because the mean of its divisors is an integer number (50611101010611).

Almost surely, 2^{101222202021221} is an apocalyptic number.

It is an amenable number.

101222202021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222202021221 is an equidigital number, since it uses as much as digits as its factorization.

101222202021221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 101222202021221 its reverse (122120202222101), we get a palindrome (223342404243322).

The spelling of 101222202021221 in words is "one hundred one trillion, two hundred twenty-two billion, two hundred two million, twenty-one thousand, two hundred twenty-one".