222121434108 has 96 divisors (see below), whose sum is σ = 607008729600. Its totient is φ = 63190619520.

The previous prime is 222121434107. The next prime is 222121434109. The reversal of 222121434108 is 801434121222.

It is an interprime number because it is at equal distance from previous prime (222121434107) and next prime (222121434109).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121434107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 843223 + ... + 1074833.

It is an arithmetic number, because the mean of its divisors is an integer number (6323007600).

Almost surely, 2^222121434108 is an apocalyptic number.

222121434108 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222121434108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303504364800).

222121434108 is an abundant number, since it is smaller than the sum of its proper divisors (384887295492).

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

222121434108 is a wasteful number, since it uses less digits than its factorization.

222121434108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231872 (or 231856 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 222121434108 in words is "two hundred twenty-two billion, one hundred twenty-one million, four hundred thirty-four thousand, one hundred eight".