111212012022022 has 4 divisors (see below), whose sum is σ = 166818018033036. Its totient is φ = 55606006011010.

The previous prime is 111212012021911. The next prime is 111212012022037. The reversal of 111212012022022 is 220220210212111.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×111212012022022² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803003005504 + ... + 27803003005507.

It is an arithmetic number, because the mean of its divisors is an integer number (41704504508259).

Almost surely, 2^{111212012022022} is an apocalyptic number.

111212012022022 is a deficient number, since it is larger than the sum of its proper divisors (55606006011014).

111212012022022 is an equidigital number, since it uses as much as digits as its factorization.

111212012022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55606006011013.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 111212012022022 its reverse (220220210212111), we get a palindrome (331432222234133).

The spelling of 111212012022022 in words is "one hundred eleven trillion, two hundred twelve billion, twelve million, twenty-two thousand, twenty-two".