1002122011992 has 64 divisors (see below), whose sum is σ = 2646837388800. Its totient is φ = 315659845760.

The previous prime is 1002122011987. The next prime is 1002122011993. The reversal of 1002122011992 is 2991102212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002122011993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15284634 + ... + 15350057.

It is an arithmetic number, because the mean of its divisors is an integer number (41356834200).

Almost surely, 2^{1002122011992} is an apocalyptic number.

1002122011992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002122011992 is an abundant number, since it is smaller than the sum of its proper divisors (1644715376808).

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

1002122011992 is a wasteful number, since it uses less digits than its factorization.

1002122011992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30634776 (or 30634772 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

Adding to 1002122011992 its reverse (2991102212001), we get a palindrome (3993224223993).

The spelling of 1002122011992 in words is "one trillion, two billion, one hundred twenty-two million, eleven thousand, nine hundred ninety-two".