1201232101320 has 48 divisors (see below), whose sum is σ = 3904004330460. Its totient is φ = 320328560256.

The previous prime is 1201232101319. The next prime is 1201232101357. The reversal of 1201232101320 is 231012321021.

1201232101320 is a `hidden beast` number, since 1 + 20 + 1 + 2 + 321 + 0 + 1 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1176778022436 + 24454078884 = 1084794^2 + 156378^2 .

It is a super-2 number, since 2×1201232101320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1201232101293 and 1201232101302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1668377559 + ... + 1668378278.

Almost surely, 2^{1201232101320} is an apocalyptic number.

1201232101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201232101320 is an abundant number, since it is smaller than the sum of its proper divisors (2702772229140).

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

1201232101320 is a wasteful number, since it uses less digits than its factorization.

1201232101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336755854 (or 3336755847 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1201232101320 its reverse (231012321021), we get a palindrome (1432244422341).

The spelling of 1201232101320 in words is "one trillion, two hundred one billion, two hundred thirty-two million, one hundred one thousand, three hundred twenty".