1201131313220 has 48 divisors (see below), whose sum is σ = 2532852504000. Its totient is φ = 478461093504.

The previous prime is 1201131313219. The next prime is 1201131313231. The reversal of 1201131313220 is 223131311021.

It is a happy number.

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 = 1201131313192 and 1201131313201.

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, 4531802 + ... + 4789518.

It is an arithmetic number, because the mean of its divisors is an integer number (52767760500).

Almost surely, 2^{1201131313220} is an apocalyptic number.

1201131313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201131313220 is an abundant number, since it is smaller than the sum of its proper divisors (1331721190780).

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

1201131313220 is a wasteful number, since it uses less digits than its factorization.

1201131313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258692 (or 258690 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1201131313220 its reverse (223131311021), we get a palindrome (1424262624241).

The spelling of 1201131313220 in words is "one trillion, two hundred one billion, one hundred thirty-one million, three hundred thirteen thousand, two hundred twenty".