100505111012 has 12 divisors (see below), whose sum is σ = 176537789820. Its totient is φ = 50065742496.

The previous prime is 100505110969. The next prime is 100505111023. The reversal of 100505111012 is 210111505001.

It can be written as a sum of positive squares in 2 ways, for example, as 35579013376 + 64926097636 = 188624^2 + 254806^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46702043 + ... + 46704194.

It is an arithmetic number, because the mean of its divisors is an integer number (14711482485).

Almost surely, 2^100505111012 is an apocalyptic number.

It is an amenable number.

100505111012 is a deficient number, since it is larger than the sum of its proper divisors (76032678808).

100505111012 is a wasteful number, since it uses less digits than its factorization.

100505111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93406510 (or 93406508 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 17.

Adding to 100505111012 its reverse (210111505001), we get a palindrome (310616616013).

The spelling of 100505111012 in words is "one hundred billion, five hundred five million, one hundred eleven thousand, twelve".