2020100012221 has 4 divisors (see below), whose sum is σ = 2020220567200. Its totient is φ = 2019979457244.

The previous prime is 2020100012173. The next prime is 2020100012233. The reversal of 2020100012221 is 1222100010202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020100012221 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 (2020100012621) 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, 60252351 + ... + 60285868.

It is an arithmetic number, because the mean of its divisors is an integer number (505055141800).

Almost surely, 2^{2020100012221} is an apocalyptic number.

It is an amenable number.

2020100012221 is a deficient number, since it is larger than the sum of its proper divisors (120554979).

2020100012221 is a wasteful number, since it uses less digits than its factorization.

2020100012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120554978.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2020100012221 its reverse (1222100010202), we get a palindrome (3242200022423).

The spelling of 2020100012221 in words is "two trillion, twenty billion, one hundred million, twelve thousand, two hundred twenty-one".