22123331212128 has 48 divisors (see below), whose sum is σ = 58329575962560. Its totient is φ = 7341957193856.

The previous prime is 22123331212127. The next prime is 22123331212139. The reversal of 22123331212128 is 82121213332122.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123331212121) 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, 507580338 + ... + 507623921.

It is an arithmetic number, because the mean of its divisors is an integer number (1215199499220).

Almost surely, 2^{22123331212128} is an apocalyptic number.

It is an amenable number.

22123331212128 is an abundant number, since it is smaller than the sum of its proper divisors (36206244750432).

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

22123331212128 is a wasteful number, since it uses less digits than its factorization.

22123331212128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015204499 (or 1015204491 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The spelling of 22123331212128 in words is "twenty-two trillion, one hundred twenty-three billion, three hundred thirty-one million, two hundred twelve thousand, one hundred twenty-eight".