1321202202000 has 640 divisors, whose sum is σ = 4694853795840. Its totient is φ = 318163507200.

The previous prime is 1321202201953. The next prime is 1321202202031. The reversal of 1321202202000 is 2022021231.

It is a happy number.

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 127 ways as a sum of consecutive naturals, for example, 962273314 + ... + 962274686.

It is an arithmetic number, because the mean of its divisors is an integer number (7335709056).

Almost surely, 2^{1321202202000} is an apocalyptic number.

1321202202000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321202202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2347426897920).

1321202202000 is an abundant number, since it is smaller than the sum of its proper divisors (3373651593840).

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

1321202202000 is a wasteful number, since it uses less digits than its factorization.

1321202202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 1321202202000 its reverse (2022021231), we get a palindrome (1323224223231).

The spelling of 1321202202000 in words is "one trillion, three hundred twenty-one billion, two hundred two million, two hundred two thousand".