100111121211028 has 24 divisors (see below), whose sum is σ = 177075146055080. Its totient is φ = 49521088143360.

The previous prime is 100111121210977. The next prime is 100111121211029. The reversal of 100111121211028 is 820112121111001.

It can be written as a sum of positive squares in 4 ways, for example, as 9320943332484 + 90790177878544 = 3053022^2 + 9528388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111121211029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358085733 + ... + 358365196.

Almost surely, 2^{100111121211028} is an apocalyptic number.

It is an amenable number.

100111121211028 is a deficient number, since it is larger than the sum of its proper divisors (76964024844052).

100111121211028 is a wasteful number, since it uses less digits than its factorization.

100111121211028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716451307 (or 716451305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 22.

Adding to 100111121211028 its reverse (820112121111001), we get a palindrome (920223242322029).

The spelling of 100111121211028 in words is "one hundred trillion, one hundred eleven billion, one hundred twenty-one million, two hundred eleven thousand, twenty-eight".