120100100203111 has 4 divisors (see below), whose sum is σ = 137257257374992. Its totient is φ = 102942943031232.

The previous prime is 120100100203087. The next prime is 120100100203133. The reversal of 120100100203111 is 111302001001021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120100100203111 - 2¹¹ = 120100100201063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100100203091 and 120100100203100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100100203211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8578578585930 + ... + 8578578585943.

It is an arithmetic number, because the mean of its divisors is an integer number (34314314343748).

Almost surely, 2^{120100100203111} is an apocalyptic number.

120100100203111 is a deficient number, since it is larger than the sum of its proper divisors (17157157171881).

120100100203111 is an equidigital number, since it uses as much as digits as its factorization.

120100100203111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17157157171880.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 120100100203111 its reverse (111302001001021), we get a palindrome (231402101204132).

The spelling of 120100100203111 in words is "one hundred twenty trillion, one hundred billion, one hundred million, two hundred three thousand, one hundred eleven".