21021201210331 has 8 divisors (see below), whose sum is σ = 24024473383904. Its totient is φ = 18017989894080.

The previous prime is 21021201210323. The next prime is 21021201210377. The reversal of 21021201210331 is 13301210212012.

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 21021201210331 - 2³ = 21021201210323 is a prime.

It is a super-2 number, since 2×21021201210331² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21021201210299 and 21021201210308.

It is not an unprimeable number, because it can be changed into a prime (21021201219331) 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, 14471730 + ... + 15857911.

It is an arithmetic number, because the mean of its divisors is an integer number (3003059172988).

Almost surely, 2^{21021201210331} is an apocalyptic number.

21021201210331 is a deficient number, since it is larger than the sum of its proper divisors (3003272173573).

21021201210331 is an equidigital number, since it uses as much as digits as its factorization.

21021201210331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30428661.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21021201210331 its reverse (13301210212012), we get a palindrome (34322411422343).

The spelling of 21021201210331 in words is "twenty-one trillion, twenty-one billion, two hundred one million, two hundred ten thousand, three hundred thirty-one".