21212131112301 has 32 divisors (see below), whose sum is σ = 30613842172800. Its totient is φ = 13018937103360.

The previous prime is 21212131112299. The next prime is 21212131112311. The reversal of 21212131112301 is 10321113121212.

It is not a de Polignac number, because 21212131112301 - 2¹ = 21212131112299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212131112311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4510080 + ... + 7922441.

It is an arithmetic number, because the mean of its divisors is an integer number (956682567900).

Almost surely, 2^{21212131112301} is an apocalyptic number.

It is an amenable number.

21212131112301 is a deficient number, since it is larger than the sum of its proper divisors (9401711060499).

21212131112301 is a wasteful number, since it uses less digits than its factorization.

21212131112301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12433389.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 21212131112301 its reverse (10321113121212), we get a palindrome (31533244233513).

The spelling of 21212131112301 in words is "twenty-one trillion, two hundred twelve billion, one hundred thirty-one million, one hundred twelve thousand, three hundred one".