1002001211988 has 48 divisors (see below), whose sum is σ = 2829179896704. Its totient is φ = 269445703680.

The previous prime is 1002001211873. The next prime is 1002001211989. The reversal of 1002001211988 is 8891121002001.

1002001211988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002001211989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350839333 + ... + 350842188.

It is an arithmetic number, because the mean of its divisors is an integer number (58941247848).

Almost surely, 2^{1002001211988} is an apocalyptic number.

It is an amenable number.

1002001211988 is an abundant number, since it is smaller than the sum of its proper divisors (1827178684716).

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

1002001211988 is a wasteful number, since it uses less digits than its factorization.

1002001211988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701681552 (or 701681550 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 33.

Adding to 1002001211988 its reverse (8891121002001), we get a palindrome (9893122213989).

The spelling of 1002001211988 in words is "one trillion, two billion, one million, two hundred eleven thousand, nine hundred eighty-eight".