2020221212101 has 4 divisors (see below), whose sum is σ = 2022147067500. Its totient is φ = 2018295356704.

The previous prime is 2020221212083. The next prime is 2020221212111. The reversal of 2020221212101 is 1012121220202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1929696048225 + 90525163876 = 1389135^2 + 300874^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020221212101 - 2⁵ = 2020221212069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020221212111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962926126 + ... + 962928223.

It is an arithmetic number, because the mean of its divisors is an integer number (505536766875).

Almost surely, 2^{2020221212101} is an apocalyptic number.

It is an amenable number.

2020221212101 is a deficient number, since it is larger than the sum of its proper divisors (1925855399).

2020221212101 is a wasteful number, since it uses less digits than its factorization.

2020221212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925855398.

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

Adding to 2020221212101 its reverse (1012121220202), we get a palindrome (3032342432303).

It can be divided in two parts, 2020221 and 212101, that added together give a palindrome (2232322).

The spelling of 2020221212101 in words is "two trillion, twenty billion, two hundred twenty-one million, two hundred twelve thousand, one hundred one".