2020212021121 has 4 divisors (see below), whose sum is σ = 2308813738432. Its totient is φ = 1731610303812.

The previous prime is 2020212021073. The next prime is 2020212021133. The reversal of 2020212021121 is 1211202120202.

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 not a de Polignac number, because 2020212021121 - 2⁷ = 2020212020993 is a prime.

It is a super-2 number, since 2×2020212021121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020212021095 and 2020212021104.

It is not an unprimeable number, because it can be changed into a prime (2020212022121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144300858645 + ... + 144300858658.

It is an arithmetic number, because the mean of its divisors is an integer number (577203434608).

Almost surely, 2^{2020212021121} is an apocalyptic number.

It is an amenable number.

2020212021121 is a deficient number, since it is larger than the sum of its proper divisors (288601717311).

2020212021121 is an equidigital number, since it uses as much as digits as its factorization.

2020212021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288601717310.

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

Adding to 2020212021121 its reverse (1211202120202), we get a palindrome (3231414141323).

The spelling of 2020212021121 in words is "two trillion, twenty billion, two hundred twelve million, twenty-one thousand, one hundred twenty-one".