121200120012222 has 64 divisors (see below), whose sum is σ = 281046435264000. Its totient is φ = 38643148203264.

The previous prime is 121200120012221. The next prime is 121200120012239. The reversal of 121200120012222 is 222210021002121.

It is a happy number.

121200120012222 is a `hidden beast` number, since 121 + 200 + 1 + 200 + 122 + 22 = 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 = 121200120012195 and 121200120012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200120012221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149304654 + ... + 150114222.

It is an arithmetic number, because the mean of its divisors is an integer number (4391350551000).

Almost surely, 2^{121200120012222} is an apocalyptic number.

121200120012222 is an abundant number, since it is smaller than the sum of its proper divisors (159846315251778).

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

121200120012222 is a wasteful number, since it uses less digits than its factorization.

121200120012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930142 (or 930136 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121200120012222 its reverse (222210021002121), we get a palindrome (343410141014343).

The spelling of 121200120012222 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twenty million, twelve thousand, two hundred twenty-two".