122010020221 has 4 divisors (see below), whose sum is σ = 129187080252. Its totient is φ = 114832960192.

The previous prime is 122010020189. The next prime is 122010020227. The reversal of 122010020221 is 122020010221.

It is a happy number.

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 69024425625 + 52985594596 = 262725^2 + 230186^2 .

It is a cyclic number.

It is not a de Polignac number, because 122010020221 - 2⁵ = 122010020189 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 (122010020227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3588529990 + ... + 3588530023.

It is an arithmetic number, because the mean of its divisors is an integer number (32296770063).

Almost surely, 2^122010020221 is an apocalyptic number.

It is an amenable number.

122010020221 is a deficient number, since it is larger than the sum of its proper divisors (7177060031).

122010020221 is an equidigital number, since it uses as much as digits as its factorization.

122010020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177060030.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122010020221 its reverse (122020010221), we get a palindrome (244030030442).

The spelling of 122010020221 in words is "one hundred twenty-two billion, ten million, twenty thousand, two hundred twenty-one".