2021002222021 has 16 divisors (see below), whose sum is σ = 2125700517888. Its totient is φ = 1917709516800.

The previous prime is 2021002221971. The next prime is 2021002222027. The reversal of 2021002222021 is 1202222001202.

It is a cyclic number.

It is not a de Polignac number, because 2021002222021 - 2¹⁵ = 2021002189253 is a prime.

It is a super-3 number, since 3×2021002222021³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021002221986 and 2021002222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021002222027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32862661 + ... + 32924101.

It is an arithmetic number, because the mean of its divisors is an integer number (132856282368).

Almost surely, 2^{2021002222021} is an apocalyptic number.

It is an amenable number.

2021002222021 is a deficient number, since it is larger than the sum of its proper divisors (104698295867).

2021002222021 is a wasteful number, since it uses less digits than its factorization.

2021002222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72852.

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

Adding to 2021002222021 its reverse (1202222001202), we get a palindrome (3223224223223).

The spelling of 2021002222021 in words is "two trillion, twenty-one billion, two million, two hundred twenty-two thousand, twenty-one".