20011021122 has 64 divisors (see below), whose sum is σ = 42617917440. Its totient is φ = 6246072000.

The previous prime is 20011021109. The next prime is 20011021153. The reversal of 20011021122 is 22112011002.

It is a junction number, because it is equal to n+sod(n) for n = 20011021098 and 20011021107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9336783 + ... + 9338925.

It is an arithmetic number, because the mean of its divisors is an integer number (665904960).

Almost surely, 2^20011021122 is an apocalyptic number.

20011021122 is an abundant number, since it is smaller than the sum of its proper divisors (22606896318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011021122 is a wasteful number, since it uses less digits than its factorization.

20011021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20011021122 its reverse (22112011002), we get a palindrome (42123032124).

The spelling of 20011021122 in words is "twenty billion, eleven million, twenty-one thousand, one hundred twenty-two".