122101220221 has 8 divisors (see below), whose sum is σ = 122498904888. Its totient is φ = 121704000000.

The previous prime is 122101220159. The next prime is 122101220231. The reversal of 122101220221 is 122022101221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 88753347225 + 33347872996 = 297915^2 + 182614^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122101220221 - 2⁷ = 122101220093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122101220195 and 122101220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101220231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414471 + ... + 644971.

It is an arithmetic number, because the mean of its divisors is an integer number (15312363111).

Almost surely, 2^122101220221 is an apocalyptic number.

It is an amenable number.

122101220221 is a deficient number, since it is larger than the sum of its proper divisors (397684667).

122101220221 is a wasteful number, since it uses less digits than its factorization.

122101220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232223.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122101220221 its reverse (122022101221), we get a palindrome (244123321442).

The spelling of 122101220221 in words is "one hundred twenty-two billion, one hundred one million, two hundred twenty thousand, two hundred twenty-one".