121223663432 has 8 divisors (see below), whose sum is σ = 227294368950. Its totient is φ = 60611831712.

The previous prime is 121223663381. The next prime is 121223663453. The reversal of 121223663432 is 234366322121.

It is a happy number.

121223663432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 105660102916 + 15563560516 = 325054^2 + 124754^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 121223663392 and 121223663401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7576478957 + ... + 7576478972.

Almost surely, 2^121223663432 is an apocalyptic number.

It is an amenable number.

121223663432 is a deficient number, since it is larger than the sum of its proper divisors (106070705518).

121223663432 is a wasteful number, since it uses less digits than its factorization.

121223663432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15152957935 (or 15152957931 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

Adding to 121223663432 its reverse (234366322121), we get a palindrome (355589985553).

The spelling of 121223663432 in words is "one hundred twenty-one billion, two hundred twenty-three million, six hundred sixty-three thousand, four hundred thirty-two".