21241710127 has 16 divisors (see below), whose sum is σ = 24130644480. Its totient is φ = 18521244000.

The previous prime is 21241710121. The next prime is 21241710143. The reversal of 21241710127 is 72101714212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21241710127 - 2⁷ = 21241709999 is a prime.

It is a super-2 number, since 2×21241710127² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21241710095 and 21241710104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241710121) 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, 172323 + ... + 268660.

It is an arithmetic number, because the mean of its divisors is an integer number (1508165280).

Almost surely, 2^21241710127 is an apocalyptic number.

21241710127 is a deficient number, since it is larger than the sum of its proper divisors (2888934353).

21241710127 is a wasteful number, since it uses less digits than its factorization.

21241710127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441174.

The product of its (nonzero) digits is 1568, while the sum is 28.

The spelling of 21241710127 in words is "twenty-one billion, two hundred forty-one million, seven hundred ten thousand, one hundred twenty-seven".