1002001102 has 4 divisors (see below), whose sum is σ = 1503001656. Its totient is φ = 501000550.

The previous prime is 1002001087. The next prime is 1002001123. The reversal of 1002001102 is 2011002001.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250500274 + ... + 250500277.

It is an arithmetic number, because the mean of its divisors is an integer number (375750414).

Almost surely, 2^1002001102 is an apocalyptic number.

1002001102 is a deficient number, since it is larger than the sum of its proper divisors (501000554).

1002001102 is an equidigital number, since it uses as much as digits as its factorization.

1002001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501000553.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1002001102 is about 31654.4009894359. The cubic root of 1002001102 is about 1000.6665895596. Note that the first 3 decimals are identical.

Adding to 1002001102 its reverse (2011002001), we get a palindrome (3013003103).

The spelling of 1002001102 in words is "one billion, two million, one thousand, one hundred two".