1201311154120 has 64 divisors (see below), whose sum is σ = 3369911817600. Its totient is φ = 374434644480.

The previous prime is 1201311154117. The next prime is 1201311154133. The reversal of 1201311154120 is 214511131021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1201311154091 and 1201311154100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195014965 + ... + 195021124.

It is an arithmetic number, because the mean of its divisors is an integer number (52654872150).

Almost surely, 2^{1201311154120} is an apocalyptic number.

1201311154120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201311154120 is an abundant number, since it is smaller than the sum of its proper divisors (2168600663480).

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

1201311154120 is a wasteful number, since it uses less digits than its factorization.

1201311154120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390036118 (or 390036114 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 1201311154120 its reverse (214511131021), we get a palindrome (1415822285141).

The spelling of 1201311154120 in words is "one trillion, two hundred one billion, three hundred eleven million, one hundred fifty-four thousand, one hundred twenty".