22012121020112 has 10 divisors (see below), whose sum is σ = 42648484476498. Its totient is φ = 11006060510048.

The previous prime is 22012121020061. The next prime is 22012121020117. The reversal of 22012121020112 is 21102012121022.

It can be written as a sum of positive squares in only one way, i.e., 19080437389456 + 2931683630656 = 4368116^2 + 1712216^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012121020117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687878781863 + ... + 687878781894.

Almost surely, 2^{22012121020112} is an apocalyptic number.

It is an amenable number.

22012121020112 is a deficient number, since it is larger than the sum of its proper divisors (20636363456386).

22012121020112 is a wasteful number, since it uses less digits than its factorization.

22012121020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375757563765 (or 1375757563759 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22012121020112 its reverse (21102012121022), we get a palindrome (43114133141134).

The spelling of 22012121020112 in words is "twenty-two trillion, twelve billion, one hundred twenty-one million, twenty thousand, one hundred twelve".