20201222011 has 8 divisors (see below), whose sum is σ = 20451597264. Its totient is φ = 19951013280.

The previous prime is 20201221993. The next prime is 20201222017. The reversal of 20201222011 is 11022210202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20201222011 - 2¹³ = 20201213819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20201221982 and 20201222000.

It is not an unprimeable number, because it can be changed into a prime (20201222017) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 212001 + ... + 292141.

It is an arithmetic number, because the mean of its divisors is an integer number (2556449658).

Almost surely, 2^20201222011 is an apocalyptic number.

20201222011 is a deficient number, since it is larger than the sum of its proper divisors (250375253).

20201222011 is an equidigital number, since it uses as much as digits as its factorization.

20201222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83261.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201222011 its reverse (11022210202), we get a palindrome (31223432213).

The spelling of 20201222011 in words is "twenty billion, two hundred one million, two hundred twenty-two thousand, eleven".