2021011122021 has 8 divisors (see below), whose sum is σ = 2695058350464. Its totient is φ = 1347152320800.

The previous prime is 2021011121989. The next prime is 2021011122059. The reversal of 2021011122021 is 1202211101202.

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

It is not a de Polignac number, because 2021011122021 - 2⁵ = 2021011121989 is a prime.

It is a super-2 number, since 2×2021011122021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021011122121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47081776 + ... + 47124681.

It is an arithmetic number, because the mean of its divisors is an integer number (336882293808).

Almost surely, 2^{2021011122021} is an apocalyptic number.

It is an amenable number.

2021011122021 is a deficient number, since it is larger than the sum of its proper divisors (674047228443).

2021011122021 is an equidigital number, since it uses as much as digits as its factorization.

2021011122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94213611.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021011122021 its reverse (1202211101202), we get a palindrome (3223222223223).

The spelling of 2021011122021 in words is "two trillion, twenty-one billion, eleven million, one hundred twenty-two thousand, twenty-one".