2102111021123 has 8 divisors (see below), whose sum is σ = 2106113947056. Its totient is φ = 2098111572000.

The previous prime is 2102111021077. The next prime is 2102111021239. The reversal of 2102111021123 is 3211201112012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102111021123 - 2²⁶ = 2102043912259 is a prime.

It is a super-2 number, since 2×2102111021123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102161021123) 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, 342773 + ... + 2078873.

It is an arithmetic number, because the mean of its divisors is an integer number (263264243382).

Almost surely, 2^{2102111021123} is an apocalyptic number.

2102111021123 is a deficient number, since it is larger than the sum of its proper divisors (4002925933).

2102111021123 is a wasteful number, since it uses less digits than its factorization.

2102111021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738405.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2102111021123 its reverse (3211201112012), we get a palindrome (5313312133135).

The spelling of 2102111021123 in words is "two trillion, one hundred two billion, one hundred eleven million, twenty-one thousand, one hundred twenty-three".