111212000022 has 32 divisors (see below), whose sum is σ = 222703713792. Its totient is φ = 37024082784.

The previous prime is 111211999991. The next prime is 111212000023. The reversal of 111212000022 is 220000212111.

It is a junction number, because it is equal to n+sod(n) for n = 111211999971 and 111212000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212000023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24618508 + ... + 24623024.

It is an arithmetic number, because the mean of its divisors is an integer number (6959491056).

Almost surely, 2^111212000022 is an apocalyptic number.

111212000022 is an abundant number, since it is smaller than the sum of its proper divisors (111491713770).

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

111212000022 is a wasteful number, since it uses less digits than its factorization.

111212000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111212000022 its reverse (220000212111), we get a palindrome (331212212133).

The spelling of 111212000022 in words is "one hundred eleven billion, two hundred twelve million, twenty-two", and thus it is an aban number.