21241655603 has 32 divisors (see below), whose sum is σ = 24712396800. Its totient is φ = 17884177920.

The previous prime is 21241655579. The next prime is 21241655623. The reversal of 21241655603 is 30655614212.

It is not a de Polignac number, because 21241655603 - 2¹² = 21241651507 is a prime.

It is a super-2 number, since 2×21241655603² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21241655623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63031451 + ... + 63031787.

It is an arithmetic number, because the mean of its divisors is an integer number (772262400).

Almost surely, 2^21241655603 is an apocalyptic number.

21241655603 is a deficient number, since it is larger than the sum of its proper divisors (3470741197).

21241655603 is a wasteful number, since it uses less digits than its factorization.

21241655603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21241655603 in words is "twenty-one billion, two hundred forty-one million, six hundred fifty-five thousand, six hundred three".