1000231001220 has 96 divisors (see below), whose sum is σ = 3160604603520. Its totient is φ = 234118850560.

The previous prime is 1000231001213. The next prime is 1000231001221. The reversal of 1000231001220 is 221001320001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000231001196 and 1000231001205.

It is not an unprimeable number, because it can be changed into a prime (1000231001221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26110197 + ... + 26148476.

It is an arithmetic number, because the mean of its divisors is an integer number (32922964620).

Almost surely, 2^{1000231001220} is an apocalyptic number.

1000231001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000231001220 is an abundant number, since it is smaller than the sum of its proper divisors (2160373602300).

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

1000231001220 is a wasteful number, since it uses less digits than its factorization.

1000231001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52258725 (or 52258723 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1000231001220 its reverse (221001320001), we get a palindrome (1221232321221).

The spelling of 1000231001220 in words is "one trillion, two hundred thirty-one million, one thousand, two hundred twenty".