21235233601704 has 32 divisors (see below), whose sum is σ = 53439660728640. Its totient is φ = 7031534304000.

The previous prime is 21235233601639. The next prime is 21235233601721. The reversal of 21235233601704 is 40710633253212.

It is a happy number.

It is a super-2 number, since 2×21235233601704² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2929802337 + ... + 2929809584.

It is an arithmetic number, because the mean of its divisors is an integer number (1669989397770).

Almost surely, 2^{21235233601704} is an apocalyptic number.

21235233601704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21235233601704 is an abundant number, since it is smaller than the sum of its proper divisors (32204427126936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21235233601704 is a wasteful number, since it uses less digits than its factorization.

21235233601704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859612081 (or 5859612077 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

Adding to 21235233601704 its reverse (40710633253212), we get a palindrome (61945866854916).

The spelling of 21235233601704 in words is "twenty-one trillion, two hundred thirty-five billion, two hundred thirty-three million, six hundred one thousand, seven hundred four".