122101212221 has 8 divisors (see below), whose sum is σ = 124429911264. Its totient is φ = 119773435600.

The previous prime is 122101212217. The next prime is 122101212253. The reversal of 122101212221 is 122212101221.

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 122101212221 - 2² = 122101212217 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 122101212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101212271) 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, 39650 + ... + 495756.

It is an arithmetic number, because the mean of its divisors is an integer number (15553738908).

Almost surely, 2^122101212221 is an apocalyptic number.

It is an amenable number.

122101212221 is a deficient number, since it is larger than the sum of its proper divisors (2328699043).

122101212221 is an equidigital number, since it uses as much as digits as its factorization.

122101212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461211.

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

Adding to 122101212221 its reverse (122212101221), we get a palindrome (244313313442).

The spelling of 122101212221 in words is "one hundred twenty-two billion, one hundred one million, two hundred twelve thousand, two hundred twenty-one".