20020221221011 has 8 divisors (see below), whose sum is σ = 21840710897664. Its totient is φ = 18199809805320.

The previous prime is 20020221221009. The next prime is 20020221221023. The reversal of 20020221221011 is 11012212202002.

It is a happy number.

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

It is not a de Polignac number, because 20020221221011 - 2¹ = 20020221221009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020221221081) 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, 19029715 + ... + 20054188.

It is an arithmetic number, because the mean of its divisors is an integer number (2730088862208).

Almost surely, 2^{20020221221011} is an apocalyptic number.

20020221221011 is a deficient number, since it is larger than the sum of its proper divisors (1820489676653).

20020221221011 is a wasteful number, since it uses less digits than its factorization.

20020221221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39130481.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20020221221011 its reverse (11012212202002), we get a palindrome (31032433423013).

The spelling of 20020221221011 in words is "twenty trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, eleven".