21033114123 has 24 divisors (see below), whose sum is σ = 33069693648. Its totient is φ = 11854273536.

The previous prime is 21033114061. The next prime is 21033114131. The reversal of 21033114123 is 32141133012.

It is not a de Polignac number, because 21033114123 - 2⁶ = 21033114059 is a prime.

It is a super-2 number, since 2×21033114123² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21033114123.

It is not an unprimeable number, because it can be changed into a prime (21033114623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 969286 + ... + 990747.

It is an arithmetic number, because the mean of its divisors is an integer number (1377903902).

Almost surely, 2^21033114123 is an apocalyptic number.

21033114123 is a deficient number, since it is larger than the sum of its proper divisors (12036579525).

21033114123 is a wasteful number, since it uses less digits than its factorization.

21033114123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960123 (or 1960116 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21033114123 its reverse (32141133012), we get a palindrome (53174247135).

The spelling of 21033114123 in words is "twenty-one billion, thirty-three million, one hundred fourteen thousand, one hundred twenty-three".