20111120102 has 4 divisors (see below), whose sum is σ = 30166680156. Its totient is φ = 10055560050.

The previous prime is 20111120083. The next prime is 20111120111. The reversal of 20111120102 is 20102111102.

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, 5027780024 + ... + 5027780027.

It is an arithmetic number, because the mean of its divisors is an integer number (7541670039).

Almost surely, 2^20111120102 is an apocalyptic number.

20111120102 is a deficient number, since it is larger than the sum of its proper divisors (10055560054).

20111120102 is a wasteful number, since it uses less digits than its factorization.

20111120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10055560053.

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

Adding to 20111120102 its reverse (20102111102), we get a palindrome (40213231204).

The spelling of 20111120102 in words is "twenty billion, one hundred eleven million, one hundred twenty thousand, one hundred two".