2020122202121 has 4 divisors (see below), whose sum is σ = 2020235780100. Its totient is φ = 2020008624144.

The previous prime is 2020122202117. The next prime is 2020122202123. The reversal of 2020122202121 is 1212022210202.

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 1987637546896 + 32484655225 = 1409836^2 + 180235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020122202121 - 2² = 2020122202117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020122202121.

It is not an unprimeable number, because it can be changed into a prime (2020122202123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56762306 + ... + 56797883.

It is an arithmetic number, because the mean of its divisors is an integer number (505058945025).

Almost surely, 2^{2020122202121} is an apocalyptic number.

It is an amenable number.

2020122202121 is a deficient number, since it is larger than the sum of its proper divisors (113577979).

2020122202121 is a wasteful number, since it uses less digits than its factorization.

2020122202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113577978.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2020122202121 its reverse (1212022210202), we get a palindrome (3232144412323).

The spelling of 2020122202121 in words is "two trillion, twenty billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-one".