22222220122000 has 80 divisors (see below), whose sum is σ = 53892775967472. Its totient is φ = 8862511257600.

The previous prime is 22222220121991. The next prime is 22222220122027. The reversal of 22222220122000 is 22102222222.

It can be written as a sum of positive squares in 8 ways, for example, as 5475824642304 + 16746395479696 = 2340048^2 + 4092236^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15811327 + ... + 17159326.

Almost surely, 2^{22222220122000} is an apocalyptic number.

22222220122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222220122000 is an abundant number, since it is smaller than the sum of its proper divisors (31670555845472).

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

22222220122000 is a wasteful number, since it uses less digits than its factorization.

22222220122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32971013 (or 32970997 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22222220122000 its reverse (22102222222), we get a palindrome (22244322344222).

The spelling of 22222220122000 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-two thousand".