20112022221012 has 36 divisors (see below), whose sum is σ = 50840752746420. Its totient is φ = 6703739726592.

The previous prime is 20112022220977. The next prime is 20112022221013. The reversal of 20112022221012 is 21012222021102.

It is a happy number.

20112022221012 is a `hidden beast` number, since 201 + 1 + 20 + 222 + 210 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10411812306756 + 9700209914256 = 3226734^2 + 3114516^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20112022221012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112022221013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10238187 + ... + 12043442.

It is an arithmetic number, because the mean of its divisors is an integer number (1412243131845).

Almost surely, 2^{20112022221012} is an apocalyptic number.

It is an amenable number.

20112022221012 is an abundant number, since it is smaller than the sum of its proper divisors (30728730525408).

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

20112022221012 is a wasteful number, since it uses less digits than its factorization.

20112022221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22306712 (or 22306707 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20112022221012 its reverse (21012222021102), we get a palindrome (41124244242114).

The spelling of 20112022221012 in words is "twenty trillion, one hundred twelve billion, twenty-two million, two hundred twenty-one thousand, twelve".