20102120111002 has 8 divisors (see below), whose sum is σ = 30183064391700. Its totient is φ = 10041098647104.

The previous prime is 20102120110999. The next prime is 20102120111023. The reversal of 20102120111002 is 20011102120102.

It can be written as a sum of positive squares in 2 ways, for example, as 19514933540041 + 587186570961 = 4417571^2 + 766281^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4980701677 + ... + 4980705712.

Almost surely, 2^{20102120111002} is an apocalyptic number.

20102120111002 is a deficient number, since it is larger than the sum of its proper divisors (10080944280698).

20102120111002 is a wasteful number, since it uses less digits than its factorization.

20102120111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961408400.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20102120111002 its reverse (20011102120102), we get a palindrome (40113222231104).

The spelling of 20102120111002 in words is "twenty trillion, one hundred two billion, one hundred twenty million, one hundred eleven thousand, two".