1322121210000 has 100 divisors (see below), whose sum is σ = 4267983645552. Its totient is φ = 352565648000.

The previous prime is 1322121209963. The next prime is 1322121210013. The reversal of 1322121210000 is 121212231.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22005354 + ... + 22065353.

Almost surely, 2^{1322121210000} is an apocalyptic number.

1322121210000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322121210000 is an abundant number, since it is smaller than the sum of its proper divisors (2945862435552).

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

1322121210000 is an equidigital number, since it uses as much as digits as its factorization.

1322121210000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44070738 (or 44070717 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1322121210000 its reverse (121212231), we get a palindrome (1322242422231).

The spelling of 1322121210000 in words is "one trillion, three hundred twenty-two billion, one hundred twenty-one million, two hundred ten thousand".