121121000121222 has 24 divisors (see below), whose sum is σ = 262435005260064. Its totient is φ = 40372717220304.

The previous prime is 121121000121203. The next prime is 121121000121269. The reversal of 121121000121222 is 222121000121121.

121121000121222 is a `hidden beast` number, since 1 + 211 + 210 + 0 + 0 + 1 + 21 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121121000121195 and 121121000121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78337038 + ... + 79868225.

It is an arithmetic number, because the mean of its divisors is an integer number (10934791885836).

Almost surely, 2^{121121000121222} is an apocalyptic number.

121121000121222 is an abundant number, since it is smaller than the sum of its proper divisors (141314005138842).

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

121121000121222 is a wasteful number, since it uses less digits than its factorization.

121121000121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158247804 (or 158247801 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121121000121222 its reverse (222121000121121), we get a palindrome (343242000242343).

The spelling of 121121000121222 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-one thousand, two hundred twenty-two".