2021222000021 has 8 divisors (see below), whose sum is σ = 2310514254720. Its totient is φ = 1732066309008.

The previous prime is 2021221999991. The next prime is 2021222000027. The reversal of 2021222000021 is 1200002221202.

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

It is not a de Polignac number, because 2021222000021 - 2⁶ = 2021221999957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021222000027) 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, 34109201 + ... + 34168406.

It is an arithmetic number, because the mean of its divisors is an integer number (288814281840).

Almost surely, 2^{2021222000021} is an apocalyptic number.

It is an amenable number.

2021222000021 is a deficient number, since it is larger than the sum of its proper divisors (289292254699).

2021222000021 is an equidigital number, since it uses as much as digits as its factorization.

2021222000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68281843.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2021222000021 its reverse (1200002221202), we get a palindrome (3221224221223).

The spelling of 2021222000021 in words is "two trillion, twenty-one billion, two hundred twenty-two million, twenty-one", and thus it is an aban number.