1201312032320 has 56 divisors (see below), whose sum is σ = 2862075666744. Its totient is φ = 480281010176.

The previous prime is 1201312032317. The next prime is 1201312032421. The reversal of 1201312032320 is 232302131021.

It can be written as a sum of positive squares in 4 ways, for example, as 31937978944 + 1169374053376 = 178712^2 + 1081376^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1201312032292 and 1201312032301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320009 + ... + 1582728.

It is an arithmetic number, because the mean of its divisors is an integer number (51108494049).

Almost surely, 2^{1201312032320} is an apocalyptic number.

1201312032320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201312032320 is an abundant number, since it is smaller than the sum of its proper divisors (1660763634424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201312032320 is a wasteful number, since it uses less digits than its factorization.

1201312032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904727 (or 1904717 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1201312032320 its reverse (232302131021), we get a palindrome (1433614163341).

The spelling of 1201312032320 in words is "one trillion, two hundred one billion, three hundred twelve million, thirty-two thousand, three hundred twenty".