1321001020232 has 32 divisors (see below), whose sum is σ = 2480249160000. Its totient is φ = 659601493824.

The previous prime is 1321001020231. The next prime is 1321001020279. The reversal of 1321001020232 is 2320201001231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321001020232.

It is not an unprimeable number, because it can be changed into a prime (1321001020231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63655394 + ... + 63676142.

It is an arithmetic number, because the mean of its divisors is an integer number (77507786250).

Almost surely, 2^{1321001020232} is an apocalyptic number.

It is an amenable number.

1321001020232 is a deficient number, since it is larger than the sum of its proper divisors (1159248139768).

1321001020232 is a wasteful number, since it uses less digits than its factorization.

1321001020232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31205 (or 31201 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1321001020232 its reverse (2320201001231), we get a palindrome (3641202021463).

The spelling of 1321001020232 in words is "one trillion, three hundred twenty-one billion, one million, twenty thousand, two hundred thirty-two".