22220121122012 has 48 divisors (see below), whose sum is σ = 43071151479552. Its totient is φ = 9945198574080.

The previous prime is 22220121122011. The next prime is 22220121122027. The reversal of 22220121122012 is 21022112102222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220121122011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5587628 + ... + 8698380.

It is an arithmetic number, because the mean of its divisors is an integer number (897315655824).

Almost surely, 2^{22220121122012} is an apocalyptic number.

22220121122012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22220121122012 is a deficient number, since it is larger than the sum of its proper divisors (20851030357540).

22220121122012 is a wasteful number, since it uses less digits than its factorization.

22220121122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113258 (or 3113256 counting only the distinct ones).

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

Adding to 22220121122012 its reverse (21022112102222), we get a palindrome (43242233224234).

The spelling of 22220121122012 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, twelve".