1002120100984 has 8 divisors (see below), whose sum is σ = 1878975189360. Its totient is φ = 501060050488.

The previous prime is 1002120100981. The next prime is 1002120100987. The reversal of 1002120100984 is 4890010212001.

It is an interprime number because it is at equal distance from previous prime (1002120100981) and next prime (1002120100987).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002120100981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62632506304 + ... + 62632506319.

It is an arithmetic number, because the mean of its divisors is an integer number (234871898670).

Almost surely, 2^{1002120100984} is an apocalyptic number.

It is an amenable number.

1002120100984 is a deficient number, since it is larger than the sum of its proper divisors (876855088376).

1002120100984 is a wasteful number, since it uses less digits than its factorization.

1002120100984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125265012629 (or 125265012625 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

Adding to 1002120100984 its reverse (4890010212001), we get a palindrome (5892130312985).

The spelling of 1002120100984 in words is "one trillion, two billion, one hundred twenty million, one hundred thousand, nine hundred eighty-four".