21241186371 has 6 divisors (see below), whose sum is σ = 30681713660. Its totient is φ = 14160790908.

The previous prime is 21241186339. The next prime is 21241186409. The reversal of 21241186371 is 17368114212.

21241186371 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 1 + 18 + 637 + 1 = 666.

It is not a de Polignac number, because 21241186371 - 2⁵ = 21241186339 is a prime.

It is a super-2 number, since 2×21241186371² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21241186301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1180065901 + ... + 1180065918.

Almost surely, 2^21241186371 is an apocalyptic number.

21241186371 is a deficient number, since it is larger than the sum of its proper divisors (9440527289).

21241186371 is a wasteful number, since it uses less digits than its factorization.

21241186371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360131825 (or 2360131822 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The spelling of 21241186371 in words is "twenty-one billion, two hundred forty-one million, one hundred eighty-six thousand, three hundred seventy-one".