1002020220992 has 112 divisors (see below), whose sum is σ = 2413211571840. Its totient is φ = 403234578432.

The previous prime is 1002020220983. The next prime is 1002020221009. The reversal of 1002020220992 is 2990220202001.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440978 + ... + 1482734.

Almost surely, 2^{1002020220992} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002020220992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1206605785920).

1002020220992 is an abundant number, since it is smaller than the sum of its proper divisors (1411191350848).

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

1002020220992 is a wasteful number, since it uses less digits than its factorization.

1002020220992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041908 (or 1041898 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 1002020220992 its reverse (2990220202001), we get a palindrome (3992240422993).

The spelling of 1002020220992 in words is "one trillion, two billion, twenty million, two hundred twenty thousand, nine hundred ninety-two".