22120020021012 has 24 divisors (see below), whose sum is σ = 51655308093312. Its totient is φ = 7367350286400.

The previous prime is 22120020020983. The next prime is 22120020021019. The reversal of 22120020021012 is 21012002002122.

It is a junction number, because it is equal to n+sod(n) for n = 22120020020982 and 22120020021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120020021019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748699689 + ... + 748729232.

It is an arithmetic number, because the mean of its divisors is an integer number (2152304503888).

Almost surely, 2^{22120020021012} is an apocalyptic number.

It is an amenable number.

22120020021012 is an abundant number, since it is smaller than the sum of its proper divisors (29535288072300).

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

22120020021012 is a wasteful number, since it uses less digits than its factorization.

22120020021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497430159 (or 1497430157 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22120020021012 its reverse (21012002002122), we get a palindrome (43132022023134).

The spelling of 22120020021012 in words is "twenty-two trillion, one hundred twenty billion, twenty million, twenty-one thousand, twelve".