22021220001012 has 48 divisors (see below), whose sum is σ = 53164050105600. Its totient is φ = 7086038377600.

The previous prime is 22021220000959. The next prime is 22021220001017. The reversal of 22021220001012 is 21010002212022.

22021220001012 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×22021220001012⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22021220000982 and 22021220001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021220001017) 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, 3608364 + ... + 7553987.

It is an arithmetic number, because the mean of its divisors is an integer number (1107584377200).

Almost surely, 2^{22021220001012} is an apocalyptic number.

It is an amenable number.

22021220001012 is an abundant number, since it is smaller than the sum of its proper divisors (31142830104588).

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

22021220001012 is a wasteful number, since it uses less digits than its factorization.

22021220001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11168056 (or 11168054 counting only the distinct ones).

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

Adding to 22021220001012 its reverse (21010002212022), we get a palindrome (43031222213034).

The spelling of 22021220001012 in words is "twenty-two trillion, twenty-one billion, two hundred twenty million, one thousand, twelve".