20011202220021 has 8 divisors (see below), whose sum is σ = 26681948336160. Its totient is φ = 13340628791952.

The previous prime is 20011202220011. The next prime is 20011202220059. The reversal of 20011202220021 is 12002220211002.

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

It is not a de Polignac number, because 20011202220021 - 2⁹ = 20011202219509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011202220011) 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, 42901386 + ... + 43365323.

It is an arithmetic number, because the mean of its divisors is an integer number (3335243542020).

Almost surely, 2^{20011202220021} is an apocalyptic number.

It is an amenable number.

20011202220021 is a deficient number, since it is larger than the sum of its proper divisors (6670746116139).

20011202220021 is an equidigital number, since it uses as much as digits as its factorization.

20011202220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86344035.

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

Adding to 20011202220021 its reverse (12002220211002), we get a palindrome (32013422431023).

The spelling of 20011202220021 in words is "twenty trillion, eleven billion, two hundred two million, two hundred twenty thousand, twenty-one".