122100212221 has 8 divisors (see below), whose sum is σ = 138413196320. Its totient is φ = 106775893872.

The previous prime is 122100212219. The next prime is 122100212239. The reversal of 122100212221 is 122212001221.

It is a happy number.

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

It is not a de Polignac number, because 122100212221 - 2¹ = 122100212219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122100212195 and 122100212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100212251) 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, 247166175 + ... + 247166668.

It is an arithmetic number, because the mean of its divisors is an integer number (17301649540).

Almost surely, 2^122100212221 is an apocalyptic number.

It is an amenable number.

122100212221 is a deficient number, since it is larger than the sum of its proper divisors (16312984099).

122100212221 is a wasteful number, since it uses less digits than its factorization.

122100212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494332875.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122100212221 its reverse (122212001221), we get a palindrome (244312213442).

The spelling of 122100212221 in words is "one hundred twenty-two billion, one hundred million, two hundred twelve thousand, two hundred twenty-one".