1311000220002 has 96 divisors (see below), whose sum is σ = 3054133434240. Its totient is φ = 374218028800.

The previous prime is 1311000219953. The next prime is 1311000220069. The reversal of 1311000220002 is 2000220001131.

It is a self number, because there is not a number n which added to its sum of digits gives 1311000220002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103843 + ... + 1622585.

It is an arithmetic number, because the mean of its divisors is an integer number (31813889940).

Almost surely, 2^{1311000220002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311000220002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1527066717120).

1311000220002 is an abundant number, since it is smaller than the sum of its proper divisors (1743133214238).

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

1311000220002 is a wasteful number, since it uses less digits than its factorization.

1311000220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518840 (or 1518829 counting only the distinct ones).

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

Adding to 1311000220002 its reverse (2000220001131), we get a palindrome (3311220221133).

The spelling of 1311000220002 in words is "one trillion, three hundred eleven billion, two hundred twenty thousand, two".