22121301123 has 48 divisors (see below), whose sum is σ = 35769726720. Its totient is φ = 13619811744.

The previous prime is 22121301049. The next prime is 22121301149. The reversal of 22121301123 is 32110312122.

22121301123 is a `hidden beast` number, since 221 + 21 + 301 + 123 = 666.

It is not a de Polignac number, because 22121301123 - 2¹² = 22121297027 is a prime.

It is a super-2 number, since 2×22121301123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22121301096 and 22121301105.

It is not an unprimeable number, because it can be changed into a prime (22121301623) 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, 93840 + ... + 230322.

It is an arithmetic number, because the mean of its divisors is an integer number (745202640).

Almost surely, 2^22121301123 is an apocalyptic number.

22121301123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22121301123 is a deficient number, since it is larger than the sum of its proper divisors (13648425597).

22121301123 is a wasteful number, since it uses less digits than its factorization.

22121301123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136550 (or 136538 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 22121301123 its reverse (32110312122), we get a palindrome (54231613245).

The spelling of 22121301123 in words is "twenty-two billion, one hundred twenty-one million, three hundred one thousand, one hundred twenty-three".