100101212111100 has 72 divisors (see below), whose sum is σ = 289629212766208. Its totient is φ = 26693376465600.

The previous prime is 100101212111041. The next prime is 100101212111129. The reversal of 100101212111100 is 1111212101001.

It is a super-2 number, since 2×100101212111100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27712515 + ... + 31115685.

Almost surely, 2^{100101212111100} is an apocalyptic number.

100101212111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100101212111100 is an abundant number, since it is smaller than the sum of its proper divisors (189528000655108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100101212111100 is a wasteful number, since it uses less digits than its factorization.

100101212111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501235 (or 3501228 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 100101212111100 its reverse (1111212101001), we get a palindrome (101212424212101).

The spelling of 100101212111100 in words is "one hundred trillion, one hundred one billion, two hundred twelve million, one hundred eleven thousand, one hundred".