2100120230123 has 4 divisors (see below), whose sum is σ = 2101880600328. Its totient is φ = 2098359859920.

The previous prime is 2100120230111. The next prime is 2100120230147. The reversal of 2100120230123 is 3210320210012.

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 2100120230123 - 2¹² = 2100120226027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100110230123) 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, 880183313 + ... + 880185698.

It is an arithmetic number, because the mean of its divisors is an integer number (525470150082).

Almost surely, 2^{2100120230123} is an apocalyptic number.

2100120230123 is a deficient number, since it is larger than the sum of its proper divisors (1760370205).

2100120230123 is a wasteful number, since it uses less digits than its factorization.

2100120230123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760370204.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2100120230123 its reverse (3210320210012), we get a palindrome (5310440440135).

The spelling of 2100120230123 in words is "two trillion, one hundred billion, one hundred twenty million, two hundred thirty thousand, one hundred twenty-three".