2021202022021 has 64 divisors (see below), whose sum is σ = 2584053964800. Its totient is φ = 1537677582336.

The previous prime is 2021202022019. The next prime is 2021202022051. The reversal of 2021202022021 is 1202202021202.

It is not a de Polignac number, because 2021202022021 - 2¹ = 2021202022019 is a prime.

It is a super-2 number, since 2×2021202022021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021202021986 and 2021202022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021202022051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1069984245 + ... + 1069986133.

It is an arithmetic number, because the mean of its divisors is an integer number (40375843200).

Almost surely, 2^{2021202022021} is an apocalyptic number.

It is an amenable number.

2021202022021 is a deficient number, since it is larger than the sum of its proper divisors (562851942779).

2021202022021 is a wasteful number, since it uses less digits than its factorization.

2021202022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2021202022021 its reverse (1202202021202), we get a palindrome (3223404043223).

The spelling of 2021202022021 in words is "two trillion, twenty-one billion, two hundred two million, twenty-two thousand, twenty-one".