2122000222021 has 4 divisors (see below), whose sum is σ = 2195172643500. Its totient is φ = 2048827800544.

The previous prime is 2122000222019. The next prime is 2122000222031. The reversal of 2122000222021 is 1202220002212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 986893230625 + 1135106991396 = 993425^2 + 1065414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122000222021 - 2¹ = 2122000222019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122000221986 and 2122000222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122000222031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36586210696 + ... + 36586210753.

It is an arithmetic number, because the mean of its divisors is an integer number (548793160875).

Almost surely, 2^{2122000222021} is an apocalyptic number.

It is an amenable number.

2122000222021 is a deficient number, since it is larger than the sum of its proper divisors (73172421479).

2122000222021 is an equidigital number, since it uses as much as digits as its factorization.

2122000222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73172421478.

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

Adding to 2122000222021 its reverse (1202220002212), we get a palindrome (3324220224233).

The spelling of 2122000222021 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two thousand, twenty-one".