2020202101021 has 8 divisors (see below), whose sum is σ = 2175811019480. Its totient is φ = 1864623004992.

The previous prime is 2020202101013. The next prime is 2020202101033. The reversal of 2020202101021 is 1201012020202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69880922500 + 1950321178521 = 264350^2 + 1396539^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2020202101021 - 2³ = 2020202101013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020202100992 and 2020202101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020202101051) 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, 7314810 + ... + 7585963.

It is an arithmetic number, because the mean of its divisors is an integer number (271976377435).

Almost surely, 2^{2020202101021} is an apocalyptic number.

It is an amenable number.

2020202101021 is a deficient number, since it is larger than the sum of its proper divisors (155608918459).

2020202101021 is a wasteful number, since it uses less digits than its factorization.

2020202101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14911215.

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

Adding to 2020202101021 its reverse (1201012020202), we get a palindrome (3221214121223).

The spelling of 2020202101021 in words is "two trillion, twenty billion, two hundred two million, one hundred one thousand, twenty-one".