20122212221211 has 16 divisors (see below), whose sum is σ = 27000990036000. Its totient is φ = 13329124343808.

The previous prime is 20122212221201. The next prime is 20122212221213. The reversal of 20122212221211 is 11212221222102.

It is not a de Polignac number, because 20122212221211 - 2⁹ = 20122212220699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20122212221213) 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, 28146715 + ... + 28852763.

It is an arithmetic number, because the mean of its divisors is an integer number (1687561877250).

Almost surely, 2^{20122212221211} is an apocalyptic number.

20122212221211 is a deficient number, since it is larger than the sum of its proper divisors (6878777814789).

20122212221211 is a wasteful number, since it uses less digits than its factorization.

20122212221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766718.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 20122212221211 its reverse (11212221222102), we get a palindrome (31334433443313).

The spelling of 20122212221211 in words is "twenty trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred eleven".