20110220121021 has 8 divisors (see below), whose sum is σ = 27136682573280. Its totient is φ = 13245285541392.

The previous prime is 20110220121011. The next prime is 20110220121037. The reversal of 20110220121021 is 12012102201102.

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

It is not a de Polignac number, because 20110220121021 - 2⁹ = 20110220120509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110220121011) 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, 40381967866 + ... + 40381968363.

It is an arithmetic number, because the mean of its divisors is an integer number (3392085321660).

Almost surely, 2^{20110220121021} is an apocalyptic number.

It is an amenable number.

20110220121021 is a deficient number, since it is larger than the sum of its proper divisors (7026462452259).

20110220121021 is an equidigital number, since it uses as much as digits as its factorization.

20110220121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80763936315.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20110220121021 its reverse (12012102201102), we get a palindrome (32122322322123).

The spelling of 20110220121021 in words is "twenty trillion, one hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, twenty-one".