1001001022002 has 16 divisors (see below), whose sum is σ = 2224446715680. Its totient is φ = 333667007316.

The previous prime is 1001001021973. The next prime is 1001001022013. The reversal of 1001001022002 is 2002201001001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9268527928 + ... + 9268528035.

It is an arithmetic number, because the mean of its divisors is an integer number (139027919730).

Almost surely, 2^{1001001022002} is an apocalyptic number.

1001001022002 is an abundant number, since it is smaller than the sum of its proper divisors (1223445693678).

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

1001001022002 is a wasteful number, since it uses less digits than its factorization.

1001001022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18537055974 (or 18537055968 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1001001022002 its reverse (2002201001001), we get a palindrome (3003202023003).

The spelling of 1001001022002 in words is "one trillion, one billion, one million, twenty-two thousand, two".