20212211310221 has 16 divisors (see below), whose sum is σ = 23326494162048. Its totient is φ = 17155208241600.

The previous prime is 20212211310199. The next prime is 20212211310227. The reversal of 20212211310221 is 12201311221202.

It is a cyclic number.

It is not a de Polignac number, because 20212211310221 - 2⁶ = 20212211310157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20212211310193 and 20212211310202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212211310227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23483630 + ... + 24329103.

It is an arithmetic number, because the mean of its divisors is an integer number (1457905885128).

Almost surely, 2^{20212211310221} is an apocalyptic number.

It is an amenable number.

20212211310221 is a deficient number, since it is larger than the sum of its proper divisors (3114282851827).

20212211310221 is a wasteful number, since it uses less digits than its factorization.

20212211310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47813332.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20212211310221 its reverse (12201311221202), we get a palindrome (32413522531423).

The spelling of 20212211310221 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, three hundred ten thousand, two hundred twenty-one".