22112211221012 has 12 divisors (see below), whose sum is σ = 42214221422016. Its totient is φ = 10051005100440.

The previous prime is 22112211220997. The next prime is 22112211221083. The reversal of 22112211221012 is 21012211221122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251275127468 + ... + 251275127555.

It is an arithmetic number, because the mean of its divisors is an integer number (3517851785168).

Almost surely, 2^{22112211221012} is an apocalyptic number.

22112211221012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22112211221012 is a deficient number, since it is larger than the sum of its proper divisors (20102010201004).

22112211221012 is a wasteful number, since it uses less digits than its factorization.

22112211221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502550255038 (or 502550255036 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22112211221012 its reverse (21012211221122), we get a palindrome (43124422442134).

The spelling of 22112211221012 in words is "twenty-two trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, twelve".