22011123222012 has 48 divisors (see below), whose sum is σ = 54386073326592. Its totient is φ = 6904732803840.

The previous prime is 22011123221981. The next prime is 22011123222079. The reversal of 22011123222012 is 21022232111022.

It is a self number, because there is not a number n which added to its sum of digits gives 22011123222012.

It is a congruent number.

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, 3636858 + ... + 7566305.

It is an arithmetic number, because the mean of its divisors is an integer number (1133043194304).

Almost surely, 2^{22011123222012} is an apocalyptic number.

It is an amenable number.

22011123222012 is an abundant number, since it is smaller than the sum of its proper divisors (32374950104580).

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

22011123222012 is a wasteful number, since it uses less digits than its factorization.

22011123222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11212818 (or 11212816 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22011123222012 its reverse (21022232111022), we get a palindrome (43033355333034).

The spelling of 22011123222012 in words is "twenty-two trillion, eleven billion, one hundred twenty-three million, two hundred twenty-two thousand, twelve".