21240002301 has 16 divisors (see below), whose sum is σ = 32914291200. Its totient is φ = 11931429168.

The previous prime is 21240002297. The next prime is 21240002339. The reversal of 21240002301 is 10320004212.

It is not a de Polignac number, because 21240002301 - 2² = 21240002297 is a prime.

It is a super-2 number, since 2×21240002301² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21240001301) 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, 8570191 + ... + 8572668.

It is an arithmetic number, because the mean of its divisors is an integer number (2057143200).

Almost surely, 2^21240002301 is an apocalyptic number.

21240002301 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21240002301 is a deficient number, since it is larger than the sum of its proper divisors (11674288899).

21240002301 is a wasteful number, since it uses less digits than its factorization.

21240002301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17142928.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21240002301 its reverse (10320004212), we get a palindrome (31560006513).

The spelling of 21240002301 in words is "twenty-one billion, two hundred forty million, two thousand, three hundred one".