20111020110002 has 4 divisors (see below), whose sum is σ = 30166530165006. Its totient is φ = 10055510055000.

The previous prime is 20111020109941. The next prime is 20111020110007. The reversal of 20111020110002 is 20001102011102.

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

It can be written as a sum of positive squares in only one way, i.e., 17269169273161 + 2841850836841 = 4155619^2 + 1685779^2 .

It is not an unprimeable number, because it can be changed into a prime (20111020110007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027755027499 + ... + 5027755027502.

Almost surely, 2^{20111020110002} is an apocalyptic number.

20111020110002 is a deficient number, since it is larger than the sum of its proper divisors (10055510055004).

20111020110002 is a wasteful number, since it uses less digits than its factorization.

20111020110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055510055003.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111020110002 its reverse (20001102011102), we get a palindrome (40112122121104).

The spelling of 20111020110002 in words is "twenty trillion, one hundred eleven billion, twenty million, one hundred ten thousand, two".