121013201224 has 8 divisors (see below), whose sum is σ = 226899752310. Its totient is φ = 60506600608.

The previous prime is 121013201209. The next prime is 121013201227. The reversal of 121013201224 is 422102310121.

It can be written as a sum of positive squares in only one way, i.e., 116951688324 + 4061512900 = 341982^2 + 63730^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121013201227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7563325069 + ... + 7563325084.

Almost surely, 2^121013201224 is an apocalyptic number.

It is an amenable number.

121013201224 is a deficient number, since it is larger than the sum of its proper divisors (105886551086).

121013201224 is a wasteful number, since it uses less digits than its factorization.

121013201224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15126650159 (or 15126650155 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 121013201224 its reverse (422102310121), we get a palindrome (543115511345).

The spelling of 121013201224 in words is "one hundred twenty-one billion, thirteen million, two hundred one thousand, two hundred twenty-four".