1001321221230 has 48 divisors (see below), whose sum is σ = 2840111103024. Its totient is φ = 242744538240.

The previous prime is 1001321221213. The next prime is 1001321221231. The reversal of 1001321221230 is 321221231001.

1001321221230 is a `hidden beast` number, since 100 + 1 + 321 + 2 + 212 + 30 = 666.

1001321221230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001321221231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505716799 + ... + 505718778.

It is an arithmetic number, because the mean of its divisors is an integer number (59168981313).

Almost surely, 2^{1001321221230} is an apocalyptic number.

1001321221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001321221230 is an abundant number, since it is smaller than the sum of its proper divisors (1838789881794).

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

1001321221230 is a wasteful number, since it uses less digits than its factorization.

1001321221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011435601 (or 1011435598 counting only the distinct ones).

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

Adding to 1001321221230 its reverse (321221231001), we get a palindrome (1322542452231).

The spelling of 1001321221230 in words is "one trillion, one billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty".