21271441210 has 16 divisors (see below), whose sum is σ = 39953316096. Its totient is φ = 8138638288.

The previous prime is 21271441207. The next prime is 21271441231. The reversal of 21271441210 is 1214417212.

It is a happy number.

It is a super-2 number, since 2×21271441210² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46242034 + ... + 46242493.

It is an arithmetic number, because the mean of its divisors is an integer number (2497082256).

Almost surely, 2^21271441210 is an apocalyptic number.

21271441210 is a deficient number, since it is larger than the sum of its proper divisors (18681874886).

21271441210 is a wasteful number, since it uses less digits than its factorization.

21271441210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92484557.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 21271441210 its reverse (1214417212), we get a palindrome (22485858422).

The spelling of 21271441210 in words is "twenty-one billion, two hundred seventy-one million, four hundred forty-one thousand, two hundred ten".