20001200102002 has 16 divisors (see below), whose sum is σ = 34288748832960. Its totient is φ = 8571698593488.

The previous prime is 20001200101963. The next prime is 20001200102063. The reversal of 20001200102002 is 20020100210002.

It is a self number, because there is not a number n which added to its sum of digits gives 20001200102002.

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, 19849752 + ... + 20833027.

It is an arithmetic number, because the mean of its divisors is an integer number (2143046802060).

Almost surely, 2^{20001200102002} is an apocalyptic number.

20001200102002 is a deficient number, since it is larger than the sum of its proper divisors (14287548730958).

20001200102002 is a wasteful number, since it uses less digits than its factorization.

20001200102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40717905.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20001200102002 its reverse (20020100210002), we get a palindrome (40021300312004).

The spelling of 20001200102002 in words is "twenty trillion, one billion, two hundred million, one hundred two thousand, two".