2130120111100 has 72 divisors (see below), whose sum is σ = 4675583521280. Its totient is φ = 842285848320.

The previous prime is 2130120111073. The next prime is 2130120111107. The reversal of 2130120111100 is 11110210312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130120111107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3215146 + ... + 3820654.

Almost surely, 2^{2130120111100} is an apocalyptic number.

2130120111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130120111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2337791760640).

2130120111100 is an abundant number, since it is smaller than the sum of its proper divisors (2545463410180).

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

2130120111100 is a wasteful number, since it uses less digits than its factorization.

2130120111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605927 (or 605920 counting only the distinct ones).

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

Adding to 2130120111100 its reverse (11110210312), we get a palindrome (2141230321412).

The spelling of 2130120111100 in words is "two trillion, one hundred thirty billion, one hundred twenty million, one hundred eleven thousand, one hundred".