1201231330220 has 48 divisors (see below), whose sum is σ = 2634745434048. Its totient is φ = 459168188160.

The previous prime is 1201231330193. The next prime is 1201231330231. The reversal of 1201231330220 is 220331321021.

It is a super-2 number, since 2×1201231330220² (a number of 25 digits) contains 22 as substring.

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 = 1201231330192 and 1201231330201.

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, 742559 + ... + 1718678.

It is an arithmetic number, because the mean of its divisors is an integer number (54890529876).

Almost surely, 2^{1201231330220} is an apocalyptic number.

1201231330220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201231330220 is an abundant number, since it is smaller than the sum of its proper divisors (1433514103828).

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

1201231330220 is a wasteful number, since it uses less digits than its factorization.

1201231330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462330 (or 2462328 counting only the distinct ones).

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

Adding to 1201231330220 its reverse (220331321021), we get a palindrome (1421562651241).

The spelling of 1201231330220 in words is "one trillion, two hundred one billion, two hundred thirty-one million, three hundred thirty thousand, two hundred twenty".