121121002222 has 16 divisors (see below), whose sum is σ = 200241285552. Its totient is φ = 54487422720.

The previous prime is 121121002183. The next prime is 121121002231. The reversal of 121121002222 is 222200121121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121121002196 and 121121002205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28376733 + ... + 28381000.

It is an arithmetic number, because the mean of its divisors is an integer number (12515080347).

Almost surely, 2^121121002222 is an apocalyptic number.

121121002222 is a deficient number, since it is larger than the sum of its proper divisors (79120283330).

121121002222 is a wasteful number, since it uses less digits than its factorization.

121121002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56757843.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121121002222 its reverse (222200121121), we get a palindrome (343321123343).

The spelling of 121121002222 in words is "one hundred twenty-one billion, one hundred twenty-one million, two thousand, two hundred twenty-two".