202020221011 has 4 divisors (see below), whose sum is σ = 230880252592. Its totient is φ = 173160189432.

The previous prime is 202020220981. The next prime is 202020221023. The reversal of 202020221011 is 110122020202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202020221011 - 2⁵ = 202020220979 is a prime.

It is a super-5 number, since 5×202020221011⁵ (a number of 58 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202020220982 and 202020221000.

It is not an unprimeable number, because it can be changed into a prime (202020222011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14430015780 + ... + 14430015793.

It is an arithmetic number, because the mean of its divisors is an integer number (57720063148).

Almost surely, 2^202020221011 is an apocalyptic number.

202020221011 is a deficient number, since it is larger than the sum of its proper divisors (28860031581).

202020221011 is an equidigital number, since it uses as much as digits as its factorization.

202020221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28860031580.

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

Adding to 202020221011 its reverse (110122020202), we get a palindrome (312142241213).

The spelling of 202020221011 in words is "two hundred two billion, twenty million, two hundred twenty-one thousand, eleven".