20122220122011 has 48 divisors (see below), whose sum is σ = 33331723776000. Its totient is φ = 11458960104384.

The previous prime is 20122220122003. The next prime is 20122220122033. The reversal of 20122220122011 is 11022102222102.

It is a happy number.

20122220122011 is a `hidden beast` number, since 20 + 1 + 222 + 201 + 220 + 1 + 1 = 666.

It is not a de Polignac number, because 20122220122011 - 2³ = 20122220122003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20122220102011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34746550 + ... + 35320916.

It is an arithmetic number, because the mean of its divisors is an integer number (694410912000).

Almost surely, 2^{20122220122011} is an apocalyptic number.

20122220122011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20122220122011 is a deficient number, since it is larger than the sum of its proper divisors (13209503653989).

20122220122011 is a wasteful number, since it uses less digits than its factorization.

20122220122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576288 (or 576285 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20122220122011 its reverse (11022102222102), we get a palindrome (31144322344113).

The spelling of 20122220122011 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-two thousand, eleven".