20011210221001 has 8 divisors (see below), whose sum is σ = 21081460479680. Its totient is φ = 18942662829168.

The previous prime is 20011210220933. The next prime is 20011210221131. The reversal of 20011210221001 is 10012201211002.

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 20011210221001 - 2⁷ = 20011210220873 is a prime.

It is a super-2 number, since 2×20011210221001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011210221601) 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, 425692581 + ... + 425739586.

It is an arithmetic number, because the mean of its divisors is an integer number (2635182559960).

Almost surely, 2^{20011210221001} is an apocalyptic number.

It is an amenable number.

20011210221001 is a deficient number, since it is larger than the sum of its proper divisors (1070250258679).

20011210221001 is a wasteful number, since it uses less digits than its factorization.

20011210221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851433423.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20011210221001 its reverse (10012201211002), we get a palindrome (30023411432003).

Subtracting from 20011210221001 its reverse (10012201211002), we obtain a palindrome (9999009009999).

The spelling of 20011210221001 in words is "twenty trillion, eleven billion, two hundred ten million, two hundred twenty-one thousand, one".