1201301210320 has 80 divisors (see below), whose sum is σ = 2890645018128. Its totient is φ = 463967354880.

The previous prime is 1201301210303. The next prime is 1201301210327. The reversal of 1201301210320 is 230121031021.

It can be written as a sum of positive squares in 8 ways, for example, as 192988004416 + 1008313205904 = 439304^2 + 1004148^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1201301210294 and 1201301210303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201301210327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1569729 + ... + 2206048.

Almost surely, 2^{1201301210320} is an apocalyptic number.

1201301210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201301210320 is an abundant number, since it is smaller than the sum of its proper divisors (1689343807808).

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

1201301210320 is a wasteful number, since it uses less digits than its factorization.

1201301210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775928 (or 3775922 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1201301210320 its reverse (230121031021), we get a palindrome (1431422241341).

The spelling of 1201301210320 in words is "one trillion, two hundred one billion, three hundred one million, two hundred ten thousand, three hundred twenty".