100120200111 has 12 divisors (see below), whose sum is σ = 144638914992. Its totient is φ = 66737177856.

The previous prime is 100120200109. The next prime is 100120200119. The reversal of 100120200111 is 111002021001.

It is a happy number.

It is not a de Polignac number, because 100120200111 - 2¹ = 100120200109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100120200093 and 100120200102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120200119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 735666 + ... + 861071.

It is an arithmetic number, because the mean of its divisors is an integer number (12053242916).

Almost surely, 2^100120200111 is an apocalyptic number.

100120200111 is a deficient number, since it is larger than the sum of its proper divisors (44518714881).

100120200111 is a wasteful number, since it uses less digits than its factorization.

100120200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603710 (or 1603707 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 100120200111 its reverse (111002021001), we get a palindrome (211122221112).

The spelling of 100120200111 in words is "one hundred billion, one hundred twenty million, two hundred thousand, one hundred eleven".