122221121358 has 128 divisors (see below), whose sum is σ = 292676567040. Its totient is φ = 33291648000.

The previous prime is 122221121357. The next prime is 122221121479. The reversal of 122221121358 is 853121122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221121357) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58730878 + ... + 58732958.

It is an arithmetic number, because the mean of its divisors is an integer number (2286535680).

Almost surely, 2^122221121358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122221121358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146338283520).

122221121358 is an abundant number, since it is smaller than the sum of its proper divisors (170455445682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122221121358 is a wasteful number, since it uses less digits than its factorization.

122221121358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774.

The product of its digits is 3840, while the sum is 30.

Adding to 122221121358 its reverse (853121122221), we get a palindrome (975342243579).

The spelling of 122221121358 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred fifty-eight".