122101020221221 has 4 divisors (see below), whose sum is σ = 122498743414432. Its totient is φ = 121703297028012.

The previous prime is 122101020221209. The next prime is 122101020221227. The reversal of 122101020221221 is 122122020101221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122101020221221 - 2⁴⁵ = 86916648132389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101020221227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198861596145 + ... + 198861596758.

It is an arithmetic number, because the mean of its divisors is an integer number (30624685853608).

Almost surely, 2^{122101020221221} is an apocalyptic number.

It is an amenable number.

122101020221221 is a deficient number, since it is larger than the sum of its proper divisors (397723193211).

122101020221221 is an equidigital number, since it uses as much as digits as its factorization.

122101020221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397723193210.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122101020221221 its reverse (122122020101221), we get a palindrome (244223040322442).

The spelling of 122101020221221 in words is "one hundred twenty-two trillion, one hundred one billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".