21000132032123 has 8 divisors (see below), whose sum is σ = 21365342969520. Its totient is φ = 20635596787680.

The previous prime is 21000132032093. The next prime is 21000132032153. The reversal of 21000132032123 is 32123023100012.

It is an interprime number because it is at equal distance from previous prime (21000132032093) and next prime (21000132032153).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21000132032123 - 2⁶ = 21000132032059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21000132032095 and 21000132032104.

It is not an unprimeable number, because it can be changed into a prime (21000132032153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168860540 + ... + 168984857.

It is an arithmetic number, because the mean of its divisors is an integer number (2670667871190).

Almost surely, 2^{21000132032123} is an apocalyptic number.

21000132032123 is a deficient number, since it is larger than the sum of its proper divisors (365210937397).

21000132032123 is a wasteful number, since it uses less digits than its factorization.

21000132032123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337846477.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21000132032123 its reverse (32123023100012), we get a palindrome (53123155132135).

The spelling of 21000132032123 in words is "twenty-one trillion, one hundred thirty-two million, thirty-two thousand, one hundred twenty-three".