21122124201123 has 48 divisors (see below), whose sum is σ = 31496577840000. Its totient is φ = 12486733811200.

The previous prime is 21122124201019. The next prime is 21122124201133. The reversal of 21122124201123 is 32110242122112.

It is not a de Polignac number, because 21122124201123 - 2⁴⁰ = 20022612573347 is a prime.

It is a super-2 number, since 2×21122124201123² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122124201093 and 21122124201102.

It is not an unprimeable number, because it can be changed into a prime (21122124201133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 324429028 + ... + 324494126.

It is an arithmetic number, because the mean of its divisors is an integer number (656178705000).

Almost surely, 2^{21122124201123} is an apocalyptic number.

21122124201123 is a deficient number, since it is larger than the sum of its proper divisors (10374453638877).

21122124201123 is a wasteful number, since it uses less digits than its factorization.

21122124201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71044 (or 71003 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21122124201123 its reverse (32110242122112), we get a palindrome (53232366323235).

The spelling of 21122124201123 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred twenty-four million, two hundred one thousand, one hundred twenty-three".