20202221111211 has 12 divisors (see below), whose sum is σ = 29229540110680. Its totient is φ = 13445737840800.

The previous prime is 20202221111197. The next prime is 20202221111279. The reversal of 20202221111211 is 11211112220202.

20202221111211 is a `hidden beast` number, since 20 + 202 + 221 + 1 + 11 + 211 = 666.

It is not a de Polignac number, because 20202221111211 - 2¹⁹ = 20202220586923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202221161211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1867458181 + ... + 1867468998.

Almost surely, 2^{20202221111211} is an apocalyptic number.

20202221111211 is a deficient number, since it is larger than the sum of its proper divisors (9027318999469).

20202221111211 is a wasteful number, since it uses less digits than its factorization.

20202221111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734927786 (or 3734927783 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20202221111211 its reverse (11211112220202), we get a palindrome (31413333331413).

The spelling of 20202221111211 in words is "twenty trillion, two hundred two billion, two hundred twenty-one million, one hundred eleven thousand, two hundred eleven".