20120021112222 has 12 divisors (see below), whose sum is σ = 43593379076520. Its totient is φ = 6706673704068.

The previous prime is 20120021112211. The next prime is 20120021112259. The reversal of 20120021112222 is 22221112002102.

It is a happy number.

20120021112222 is a `hidden beast` number, since 20 + 1 + 200 + 211 + 12 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1117778950679 = 20120021112222 / (2 + 0 + 1 + 2 + 0 + 0 + 2 + 1 + 1 + 1 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20120021112195 and 20120021112204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 558889475322 + ... + 558889475357.

It is an arithmetic number, because the mean of its divisors is an integer number (3632781589710).

Almost surely, 2^{20120021112222} is an apocalyptic number.

20120021112222 is an abundant number, since it is smaller than the sum of its proper divisors (23473357964298).

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

20120021112222 is a wasteful number, since it uses less digits than its factorization.

20120021112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117778950687 (or 1117778950684 counting only the distinct ones).

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

Adding to 20120021112222 its reverse (22221112002102), we get a palindrome (42341133114324).

The spelling of 20120021112222 in words is "twenty trillion, one hundred twenty billion, twenty-one million, one hundred twelve thousand, two hundred twenty-two".