21331244012101 has 8 divisors (see below), whose sum is σ = 21359628778208. Its totient is φ = 21302873910000.

The previous prime is 21331244012083. The next prime is 21331244012147. The reversal of 21331244012101 is 10121044213312.

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 21331244012101 - 2²³ = 21331235623493 is a prime.

It is a super-2 number, since 2×21331244012101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331244012171) 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, 753195 + ... + 6574936.

It is an arithmetic number, because the mean of its divisors is an integer number (2669953597276).

Almost surely, 2^{21331244012101} is an apocalyptic number.

It is an amenable number.

21331244012101 is a deficient number, since it is larger than the sum of its proper divisors (28384766107).

21331244012101 is a wasteful number, since it uses less digits than its factorization.

21331244012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332003.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21331244012101 its reverse (10121044213312), we get a palindrome (31452288225413).

The spelling of 21331244012101 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred forty-four million, twelve thousand, one hundred one".