20021220210011 has 8 divisors (see below), whose sum is σ = 21598919028864. Its totient is φ = 18487963611520.

The previous prime is 20021220210001. The next prime is 20021220210067. The reversal of 20021220210011 is 11001202212002.

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 20021220210011 - 2³⁰ = 20020146468187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021220210001) 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, 11110554155 + ... + 11110555956.

It is an arithmetic number, because the mean of its divisors is an integer number (2699864878608).

Almost surely, 2^{20021220210011} is an apocalyptic number.

20021220210011 is a deficient number, since it is larger than the sum of its proper divisors (1577698818853).

20021220210011 is a wasteful number, since it uses less digits than its factorization.

20021220210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22221110181.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021220210011 its reverse (11001202212002), we get a palindrome (31022422422013).

The spelling of 20021220210011 in words is "twenty trillion, twenty-one billion, two hundred twenty million, two hundred ten thousand, eleven".