21427132001152 has 32 divisors (see below), whose sum is σ = 42687159175080. Its totient is φ = 10713492051456.

The previous prime is 21427132001137. The next prime is 21427132001287. The reversal of 21427132001152 is 25110023172412.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×21427132001152² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21247098 + ... + 22232710.

Almost surely, 2^{21427132001152} is an apocalyptic number.

It is an amenable number.

21427132001152 is a deficient number, since it is larger than the sum of its proper divisors (21260027173928).

21427132001152 is an equidigital number, since it uses as much as digits as its factorization.

21427132001152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155470 (or 1155458 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 21427132001152 its reverse (25110023172412), we get a palindrome (46537155173564).

The spelling of 21427132001152 in words is "twenty-one trillion, four hundred twenty-seven billion, one hundred thirty-two million, one thousand, one hundred fifty-two".