121121223043112 has 8 divisors (see below), whose sum is σ = 227102293205850. Its totient is φ = 60560611521552.

The previous prime is 121121223043097. The next prime is 121121223043129. The reversal of 121121223043112 is 211340322121121.

It can be written as a sum of positive squares in only one way, i.e., 86518757990116 + 34602465052996 = 9301546^2 + 5882386^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 7570076440187 + ... + 7570076440202.

Almost surely, 2^{121121223043112} is an apocalyptic number.

It is an amenable number.

121121223043112 is a deficient number, since it is larger than the sum of its proper divisors (105981070162738).

121121223043112 is a wasteful number, since it uses less digits than its factorization.

121121223043112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140152880395 (or 15140152880391 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 121121223043112 its reverse (211340322121121), we get a palindrome (332461545164233).

The spelling of 121121223043112 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty-three million, forty-three thousand, one hundred twelve".