20002011112221 has 16 divisors (see below), whose sum is σ = 28076094950400. Its totient is φ = 12631455519408.

The previous prime is 20002011112159. The next prime is 20002011112261. The reversal of 20002011112221 is 12221111020002.

It is not a de Polignac number, because 20002011112221 - 2¹³ = 20002011104029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20002011112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002011112261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18834261 + ... + 19867898.

It is an arithmetic number, because the mean of its divisors is an integer number (1754755934400).

Almost surely, 2^{20002011112221} is an apocalyptic number.

It is an amenable number.

20002011112221 is a deficient number, since it is larger than the sum of its proper divisors (8074083838179).

20002011112221 is a wasteful number, since it uses less digits than its factorization.

20002011112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38711248.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20002011112221 its reverse (12221111020002), we get a palindrome (32223122132223).

The spelling of 20002011112221 in words is "twenty trillion, two billion, eleven million, one hundred twelve thousand, two hundred twenty-one".