20221011 has 24 divisors (see below), whose sum is σ = 30054960. Its totient is φ = 13095936.

The previous prime is 20221009. The next prime is 20221027. The reversal of 20221011 is 11012202.

It is not a de Polignac number, because 20221011 - 2¹ = 20221009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20220984 and 20221002.

It is not an unprimeable number, because it can be changed into a prime (20221711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59835 + ... + 60171.

It is an arithmetic number, because the mean of its divisors is an integer number (1252290).

Almost surely, 2^20221011 is an apocalyptic number.

20221011 is a deficient number, since it is larger than the sum of its proper divisors (9833949).

20221011 is a wasteful number, since it uses less digits than its factorization.

20221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 20221011 is about 4496.7778464140. Note that the first 3 decimals coincide. The cubic root of 20221011 is about 272.4379613561.

Adding to 20221011 its reverse (11012202), we get a palindrome (31233213).

The spelling of 20221011 in words is "twenty million, two hundred twenty-one thousand, eleven".