20002221011 has 8 divisors (see below), whose sum is σ = 20734110000. Its totient is φ = 19273142560.

The previous prime is 20002221007. The next prime is 20002221017. The reversal of 20002221011 is 11012220002.

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 20002221011 - 2² = 20002221007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002220983 and 20002221001.

It is not an unprimeable number, because it can be changed into a prime (20002221017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688136 + ... + 716613.

It is an arithmetic number, because the mean of its divisors is an integer number (2591763750).

Almost surely, 2^20002221011 is an apocalyptic number.

20002221011 is a deficient number, since it is larger than the sum of its proper divisors (731888989).

20002221011 is a wasteful number, since it uses less digits than its factorization.

20002221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405269.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20002221011 its reverse (11012220002), we get a palindrome (31014441013).

The spelling of 20002221011 in words is "twenty billion, two million, two hundred twenty-one thousand, eleven".