22220111222012 has 24 divisors (see below), whose sum is σ = 42577908312240. Its totient is φ = 10062503893760.

The previous prime is 22220111221993. The next prime is 22220111222053. The reversal of 22220111222012 is 21022211102222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938654573 + ... + 938678244.

It is an arithmetic number, because the mean of its divisors is an integer number (1774079513010).

Almost surely, 2^{22220111222012} is an apocalyptic number.

22220111222012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22220111222012 is a deficient number, since it is larger than the sum of its proper divisors (20357797090228).

22220111222012 is a wasteful number, since it uses less digits than its factorization.

22220111222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877333101 (or 1877333099 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22220111222012 its reverse (21022211102222), we get a palindrome (43242322324234).

The spelling of 22220111222012 in words is "twenty-two trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, twelve".