121111000222 has 4 divisors (see below), whose sum is σ = 181666500336. Its totient is φ = 60555500110.

The previous prime is 121111000217. The next prime is 121111000237. The reversal of 121111000222 is 222000111121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222000111121 = 211777 ⋅1048273.

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, 30277750054 + ... + 30277750057.

It is an arithmetic number, because the mean of its divisors is an integer number (45416625084).

Almost surely, 2^121111000222 is an apocalyptic number.

121111000222 is a deficient number, since it is larger than the sum of its proper divisors (60555500114).

121111000222 is an equidigital number, since it uses as much as digits as its factorization.

121111000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60555500113.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121111000222 its reverse (222000111121), we get a palindrome (343111111343).

The spelling of 121111000222 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred twenty-two", and thus it is an aban number.