2101231123101 has 24 divisors (see below), whose sum is σ = 3327838154784. Its totient is φ = 1267009064160.

The previous prime is 2101231123099. The next prime is 2101231123129. The reversal of 2101231123101 is 1013211321012.

2101231123101 is a `hidden beast` number, since 210 + 1 + 231 + 123 + 101 = 666.

It is not a de Polignac number, because 2101231123101 - 2¹ = 2101231123099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101231123001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53849931 + ... + 53888936.

It is an arithmetic number, because the mean of its divisors is an integer number (138659923116).

Almost surely, 2^{2101231123101} is an apocalyptic number.

It is an amenable number.

2101231123101 is a deficient number, since it is larger than the sum of its proper divisors (1226607031683).

2101231123101 is a wasteful number, since it uses less digits than its factorization.

2101231123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107739081 (or 107739078 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2101231123101 its reverse (1013211321012), we get a palindrome (3114442444113).

It can be divided in two parts, 21012 and 31123101, that added together give a palindrome (31144113).

The spelling of 2101231123101 in words is "two trillion, one hundred one billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred one".