21330232131001 has 4 divisors (see below), whose sum is σ = 21330317246032. Its totient is φ = 21330147015972.

The previous prime is 21330232130981. The next prime is 21330232131029. The reversal of 21330232131001 is 10013123203312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21330232131001 - 2⁷ = 21330232130873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21330232137001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42180495 + ... + 42683188.

It is an arithmetic number, because the mean of its divisors is an integer number (5332579311508).

Almost surely, 2^{21330232131001} is an apocalyptic number.

It is an amenable number.

21330232131001 is a deficient number, since it is larger than the sum of its proper divisors (85115031).

21330232131001 is an equidigital number, since it uses as much as digits as its factorization.

21330232131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85115030.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21330232131001 its reverse (10013123203312), we get a palindrome (31343355334313).

The spelling of 21330232131001 in words is "twenty-one trillion, three hundred thirty billion, two hundred thirty-two million, one hundred thirty-one thousand, one".