20112220121211 has 6 divisors (see below), whose sum is σ = 29050984619540. Its totient is φ = 13408146747468.

The previous prime is 20112220121173. The next prime is 20112220121281. The reversal of 20112220121211 is 11212102221102.

20112220121211 is a `hidden beast` number, since 2 + 0 + 112 + 220 + 121 + 211 = 666.

It is not a de Polignac number, because 20112220121211 - 2¹¹ = 20112220119163 is a prime.

It is a super-2 number, since 2×20112220121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112220121281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117345562281 + ... + 1117345562298.

Almost surely, 2^{20112220121211} is an apocalyptic number.

20112220121211 is a deficient number, since it is larger than the sum of its proper divisors (8938764498329).

20112220121211 is a wasteful number, since it uses less digits than its factorization.

20112220121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234691124585 (or 2234691124582 counting only the distinct ones).

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

Adding to 20112220121211 its reverse (11212102221102), we get a palindrome (31324322342313).

The spelling of 20112220121211 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, one hundred twenty-one thousand, two hundred eleven".