122002220210221 has 4 divisors (see below), whose sum is σ = 131387006380252. Its totient is φ = 112617434040192.

The previous prime is 122002220210099. The next prime is 122002220210237. The reversal of 122002220210221 is 122012022200221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53068820977225 + 68933399232996 = 7284835^2 + 8302614^2 .

It is a cyclic number.

It is not a de Polignac number, because 122002220210221 - 2²⁹ = 122001683339309 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 (122002220210281) 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, 4692393084996 + ... + 4692393085021.

It is an arithmetic number, because the mean of its divisors is an integer number (32846751595063).

Almost surely, 2^{122002220210221} is an apocalyptic number.

It is an amenable number.

122002220210221 is a deficient number, since it is larger than the sum of its proper divisors (9384786170031).

122002220210221 is an equidigital number, since it uses as much as digits as its factorization.

122002220210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9384786170030.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122002220210221 its reverse (122012022200221), we get a palindrome (244014242410442).

The spelling of 122002220210221 in words is "one hundred twenty-two trillion, two billion, two hundred twenty million, two hundred ten thousand, two hundred twenty-one".