21233021132006 has 4 divisors (see below), whose sum is σ = 31849531698012. Its totient is φ = 10616510566002.

The previous prime is 21233021131997. The next prime is 21233021132009. The reversal of 21233021132006 is 60023112033212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233021132009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308255283000 + ... + 5308255283003.

It is an arithmetic number, because the mean of its divisors is an integer number (7962382924503).

Almost surely, 2^{21233021132006} is an apocalyptic number.

21233021132006 is a deficient number, since it is larger than the sum of its proper divisors (10616510566006).

21233021132006 is a wasteful number, since it uses less digits than its factorization.

21233021132006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10616510566005.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21233021132006 its reverse (60023112033212), we get a palindrome (81256133165218).

The spelling of 21233021132006 in words is "twenty-one trillion, two hundred thirty-three billion, twenty-one million, one hundred thirty-two thousand, six".