21232012101 has 8 divisors (see below), whose sum is σ = 28731877344. Its totient is φ = 13943410800.

The previous prime is 21232012091. The next prime is 21232012157. The reversal of 21232012101 is 10121023212.

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

It is not a de Polignac number, because 21232012101 - 2⁵ = 21232012069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52815750 + ... + 52816151.

It is an arithmetic number, because the mean of its divisors is an integer number (3591484668).

Almost surely, 2^21232012101 is an apocalyptic number.

It is an amenable number.

21232012101 is a deficient number, since it is larger than the sum of its proper divisors (7499865243).

21232012101 is a wasteful number, since it uses less digits than its factorization.

21232012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105631971.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21232012101 its reverse (10121023212), we get a palindrome (31353035313).

The spelling of 21232012101 in words is "twenty-one billion, two hundred thirty-two million, twelve thousand, one hundred one".