21124338301 has 16 divisors (see below), whose sum is σ = 24276571200. Its totient is φ = 18178992000.

The previous prime is 21124338271. The next prime is 21124338307. The reversal of 21124338301 is 10383342112.

It is a 4-Lehmer number, since φ(21124338301) divides (21124338301-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 21124338301 - 2⁵ = 21124338269 is a prime.

It is a deceptive number, since it divides R_21124338300.

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 21124338301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21124338307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233065 + ... + 310753.

It is an arithmetic number, because the mean of its divisors is an integer number (1517285700).

It is a Poulet number, since it divides 2^21124338300-1.

Almost surely, 2^21124338301 is an apocalyptic number.

21124338301 is the 77689-th nonagonal number.

It is an amenable number.

21124338301 is a deficient number, since it is larger than the sum of its proper divisors (3152232899).

21124338301 is a wasteful number, since it uses less digits than its factorization.

21124338301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79020.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 21124338301 in words is "twenty-one billion, one hundred twenty-four million, three hundred thirty-eight thousand, three hundred one".