111220021212212 has 24 divisors (see below), whose sum is σ = 212344620858720. Its totient is φ = 50550867131360.

The previous prime is 111220021212199. The next prime is 111220021212247. The reversal of 111220021212212 is 212212120022111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91589078 + ... + 92795469.

It is an arithmetic number, because the mean of its divisors is an integer number (8847692535780).

Almost surely, 2^{111220021212212} is an apocalyptic number.

It is an amenable number.

111220021212212 is a deficient number, since it is larger than the sum of its proper divisors (101124599646508).

111220021212212 is a wasteful number, since it uses less digits than its factorization.

111220021212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184398271 (or 184398269 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111220021212212 its reverse (212212120022111), we get a palindrome (323432141234323).

The spelling of 111220021212212 in words is "one hundred eleven trillion, two hundred twenty billion, twenty-one million, two hundred twelve thousand, two hundred twelve".