21124201301 has 12 divisors (see below), whose sum is σ = 24723814752. Its totient is φ = 17995368888.

The previous prime is 21124201279. The next prime is 21124201313. The reversal of 21124201301 is 10310242112.

It is not a de Polignac number, because 21124201301 - 2⁶ = 21124201237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21124201301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21127201301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1314425 + ... + 1330398.

It is an arithmetic number, because the mean of its divisors is an integer number (2060317896).

Almost surely, 2^21124201301 is an apocalyptic number.

It is an amenable number.

21124201301 is a deficient number, since it is larger than the sum of its proper divisors (3599613451).

21124201301 is a wasteful number, since it uses less digits than its factorization.

21124201301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645000 (or 2644993 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21124201301 its reverse (10310242112), we get a palindrome (31434443413).

The spelling of 21124201301 in words is "twenty-one billion, one hundred twenty-four million, two hundred one thousand, three hundred one".