122212011221 has 8 divisors (see below), whose sum is σ = 122913751488. Its totient is φ = 121511880000.

The previous prime is 122212011151. The next prime is 122212011253. The reversal of 122212011221 is 122110212221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122212011221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122212011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212011281) 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, 249755 + ... + 553896.

It is an arithmetic number, because the mean of its divisors is an integer number (15364218936).

Almost surely, 2^122212011221 is an apocalyptic number.

It is an amenable number.

122212011221 is a deficient number, since it is larger than the sum of its proper divisors (701740267).

122212011221 is an equidigital number, since it uses as much as digits as its factorization.

122212011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804523.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122212011221 its reverse (122110212221), we get a palindrome (244322223442).

The spelling of 122212011221 in words is "one hundred twenty-two billion, two hundred twelve million, eleven thousand, two hundred twenty-one".