20120122211211 has 24 divisors (see below), whose sum is σ = 32241798313920. Its totient is φ = 11987335263600.

The previous prime is 20120122211209. The next prime is 20120122211219. The reversal of 20120122211211 is 11211222102102.

20120122211211 is a `hidden beast` number, since 2 + 0 + 120 + 122 + 211 + 211 = 666.

It is not a de Polignac number, because 20120122211211 - 2¹ = 20120122211209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120122211219) 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 23 ways as a sum of consecutive naturals, for example, 1722312445 + ... + 1722324126.

It is an arithmetic number, because the mean of its divisors is an integer number (1343408263080).

Almost surely, 2^{20120122211211} is an apocalyptic number.

20120122211211 is a deficient number, since it is larger than the sum of its proper divisors (12121676102709).

20120122211211 is a wasteful number, since it uses less digits than its factorization.

20120122211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444636647 (or 3444636644 counting only the distinct ones).

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

Adding to 20120122211211 its reverse (11211222102102), we get a palindrome (31331344313313).

The spelling of 20120122211211 in words is "twenty trillion, one hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, two hundred eleven".