21587223141 has 128 divisors (see below), whose sum is σ = 37884672000. Its totient is φ = 12009254400.

The previous prime is 21587223127. The next prime is 21587223167. The reversal of 21587223141 is 14132278512.

21587223141 is a `hidden beast` number, since 2 + 1 + 587 + 2 + 2 + 31 + 41 = 666.

It is not a de Polignac number, because 21587223141 - 2¹⁰ = 21587222117 is a prime.

It is a super-3 number, since 3×21587223141³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21587223096 and 21587223105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21587223191) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 26617626 + ... + 26618436.

It is an arithmetic number, because the mean of its divisors is an integer number (295974000).

Almost surely, 2^21587223141 is an apocalyptic number.

It is an amenable number.

21587223141 is a deficient number, since it is larger than the sum of its proper divisors (16297448859).

21587223141 is a wasteful number, since it uses less digits than its factorization.

21587223141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 986 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The spelling of 21587223141 in words is "twenty-one billion, five hundred eighty-seven million, two hundred twenty-three thousand, one hundred forty-one".