2124223021 has 16 divisors (see below), whose sum is σ = 2219443200. Its totient is φ = 2031239808.

The previous prime is 2124222977. The next prime is 2124223043. The reversal of 2124223021 is 1203224212.

It is a cyclic number.

It is not a de Polignac number, because 2124223021 - 2²¹ = 2122125869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2124223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124623021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679500 + ... + 682618.

It is an arithmetic number, because the mean of its divisors is an integer number (138715200).

Almost surely, 2^2124223021 is an apocalyptic number.

It is an amenable number.

2124223021 is a deficient number, since it is larger than the sum of its proper divisors (95220179).

2124223021 is a wasteful number, since it uses less digits than its factorization.

2124223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2124223021 is about 46089.2939954606. The cubic root of 2124223021 is about 1285.4840835376.

Adding to 2124223021 its reverse (1203224212), we get a palindrome (3327447233).

The spelling of 2124223021 in words is "two billion, one hundred twenty-four million, two hundred twenty-three thousand, twenty-one".