121000022222 has 24 divisors (see below), whose sum is σ = 194713583400. Its totient is φ = 56377385600.

The previous prime is 121000022197. The next prime is 121000022261. The reversal of 121000022222 is 222220000121.

It is a junction number, because it is equal to n+sod(n) for n = 121000022197 and 121000022206.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 977972 + ... + 1094727.

It is an arithmetic number, because the mean of its divisors is an integer number (8113065975).

Almost surely, 2^121000022222 is an apocalyptic number.

121000022222 is a deficient number, since it is larger than the sum of its proper divisors (73713561178).

121000022222 is a wasteful number, since it uses less digits than its factorization.

121000022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072836 (or 2072819 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 121000022222 its reverse (222220000121), we get a palindrome (343220022343).

The spelling of 121000022222 in words is "one hundred twenty-one billion, twenty-two thousand, two hundred twenty-two".