21301473127 has 16 divisors (see below), whose sum is σ = 24618069504. Its totient is φ = 18216112000.

The previous prime is 21301473121. The next prime is 21301473163. The reversal of 21301473127 is 72137410312.

It is not a de Polignac number, because 21301473127 - 2²⁷ = 21167255399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301473121) 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, 331602 + ... + 390592.

It is an arithmetic number, because the mean of its divisors is an integer number (1538629344).

Almost surely, 2^21301473127 is an apocalyptic number.

21301473127 is a deficient number, since it is larger than the sum of its proper divisors (3316596377).

21301473127 is a wasteful number, since it uses less digits than its factorization.

21301473127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60950.

The product of its (nonzero) digits is 7056, while the sum is 31.

Adding to 21301473127 its reverse (72137410312), we get a palindrome (93438883439).

The spelling of 21301473127 in words is "twenty-one billion, three hundred one million, four hundred seventy-three thousand, one hundred twenty-seven".