20110120212222 has 12 divisors (see below), whose sum is σ = 43571927126520. Its totient is φ = 6703373404068.

The previous prime is 20110120212151. The next prime is 20110120212269. The reversal of 20110120212222 is 22221202101102.

It is a happy number.

20110120212222 is a `hidden beast` number, since 2 + 0 + 110 + 120 + 212 + 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: 1117228900679 = 20110120212222 / (2 + 0 + 1 + 1 + 0 + 1 + 2 + 0 + 2 + 1 + 2 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20110120212195 and 20110120212204.

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, 558614450322 + ... + 558614450357.

It is an arithmetic number, because the mean of its divisors is an integer number (3630993927210).

Almost surely, 2^{20110120212222} is an apocalyptic number.

20110120212222 is an abundant number, since it is smaller than the sum of its proper divisors (23461806914298).

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

20110120212222 is a wasteful number, since it uses less digits than its factorization.

20110120212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117228900687 (or 1117228900684 counting only the distinct ones).

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

Adding to 20110120212222 its reverse (22221202101102), we get a palindrome (42331322313324).

The spelling of 20110120212222 in words is "twenty trillion, one hundred ten billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-two".