121100100222 has 16 divisors (see below), whose sum is σ = 242886324240. Its totient is φ = 40252346112.

The previous prime is 121100100131. The next prime is 121100100223. The reversal of 121100100222 is 222001001121.

It is a junction number, because it is equal to n+sod(n) for n = 121100100198 and 121100100207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100100223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28586197 + ... + 28590432.

It is an arithmetic number, because the mean of its divisors is an integer number (15180395265).

Almost surely, 2^121100100222 is an apocalyptic number.

121100100222 is an abundant number, since it is smaller than the sum of its proper divisors (121786224018).

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

121100100222 is a wasteful number, since it uses less digits than its factorization.

121100100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57176987.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121100100222 its reverse (222001001121), we get a palindrome (343101101343).

The spelling of 121100100222 in words is "one hundred twenty-one billion, one hundred million, one hundred thousand, two hundred twenty-two".