122222120021 has 8 divisors (see below), whose sum is σ = 128663380320. Its totient is φ = 115781711472.

The previous prime is 122222119993. The next prime is 122222120047. The reversal of 122222120021 is 120021222221.

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 122222120021 - 2¹⁴ = 122222103637 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 (122222120521) 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, 92891 + ... + 503063.

It is an arithmetic number, because the mean of its divisors is an integer number (16082922540).

Almost surely, 2^122222120021 is an apocalyptic number.

It is an amenable number.

122222120021 is a deficient number, since it is larger than the sum of its proper divisors (6441260299).

122222120021 is a wasteful number, since it uses less digits than its factorization.

122222120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425875.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122222120021 its reverse (120021222221), we get a palindrome (242243342242).

The spelling of 122222120021 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, twenty-one".