121443211432 has 8 divisors (see below), whose sum is σ = 227706021450. Its totient is φ = 60721605712.

The previous prime is 121443211429. The next prime is 121443211471. The reversal of 121443211432 is 234112344121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 118662336676 + 2780874756 = 344474^2 + 52734^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121443211432.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7590200707 + ... + 7590200722.

Almost surely, 2^121443211432 is an apocalyptic number.

It is an amenable number.

121443211432 is a deficient number, since it is larger than the sum of its proper divisors (106262810018).

121443211432 is a wasteful number, since it uses less digits than its factorization.

121443211432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15180401435 (or 15180401431 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 121443211432 its reverse (234112344121), we get a palindrome (355555555553).

The spelling of 121443211432 in words is "one hundred twenty-one billion, four hundred forty-three million, two hundred eleven thousand, four hundred thirty-two".