2101101123 has 16 divisors (see below), whose sum is σ = 3057590016. Its totient is φ = 1272793440.

The previous prime is 2101101109. The next prime is 2101101137. The reversal of 2101101123 is 3211011012.

It is an interprime number because it is at equal distance from previous prime (2101101109) and next prime (2101101137).

It is not a de Polignac number, because 2101101123 - 2⁸ = 2101100867 is a prime.

It is a super-2 number, since 2×2101101123² = 8829251858143722258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2101101099 and 2101101108.

It is not an unprimeable number, because it can be changed into a prime (2101101323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61786 + ... + 89552.

It is an arithmetic number, because the mean of its divisors is an integer number (191099376).

Almost surely, 2^2101101123 is an apocalyptic number.

2101101123 is a deficient number, since it is larger than the sum of its proper divisors (956488893).

2101101123 is a wasteful number, since it uses less digits than its factorization.

2101101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30074.

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

The square root of 2101101123 is about 45837.7696119696. The cubic root of 2101101123 is about 1280.8029473349.

Adding to 2101101123 its reverse (3211011012), we get a palindrome (5312112135).

The spelling of 2101101123 in words is "two billion, one hundred one million, one hundred one thousand, one hundred twenty-three".