20002011022221 has 8 divisors (see below), whose sum is σ = 26765627265504. Its totient is φ = 13286534396880.

The previous prime is 20002011022183. The next prime is 20002011022291. The reversal of 20002011022221 is 12222011020002.

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

It is not a de Polignac number, because 20002011022221 - 2²¹ = 20002008925069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20002011022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002011022291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12034903515 + ... + 12034905176.

It is an arithmetic number, because the mean of its divisors is an integer number (3345703408188).

Almost surely, 2^{20002011022221} is an apocalyptic number.

It is an amenable number.

20002011022221 is a deficient number, since it is larger than the sum of its proper divisors (6763616243283).

20002011022221 is a wasteful number, since it uses less digits than its factorization.

20002011022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24069808971.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20002011022221 its reverse (12222011020002), we get a palindrome (32224022042223).

The spelling of 20002011022221 in words is "twenty trillion, two billion, eleven million, twenty-two thousand, two hundred twenty-one".