100111222012120 has 32 divisors (see below), whose sum is σ = 245727544939920. Its totient is φ = 36404080731520.

The previous prime is 100111222012117. The next prime is 100111222012129. The reversal of 100111222012120 is 21210222111001.

It is a junction number, because it is equal to n+sod(n) for n = 100111222012094 and 100111222012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111222012129) 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, 113762751847 + ... + 113762752726.

Almost surely, 2^{100111222012120} is an apocalyptic number.

100111222012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100111222012120 is an abundant number, since it is smaller than the sum of its proper divisors (145616322927800).

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

100111222012120 is a wasteful number, since it uses less digits than its factorization.

100111222012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227525504595 (or 227525504591 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100111222012120 its reverse (21210222111001), we get a palindrome (121321444123121).

The spelling of 100111222012120 in words is "one hundred trillion, one hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred twenty".