2122210212021 has 16 divisors (see below), whose sum is σ = 3144380081920. Its totient is φ = 1414642579200.

The previous prime is 2122210212011. The next prime is 2122210212077. The reversal of 2122210212021 is 1202120122212.

It is a happy number.

2122210212021 is a `hidden beast` number, since 212 + 221 + 0 + 212 + 0 + 21 = 666.

It is not a de Polignac number, because 2122210212021 - 2¹⁵ = 2122210179253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122210211985 and 2122210212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122210212011) 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, 4324780 + ... + 4790421.

It is an arithmetic number, because the mean of its divisors is an integer number (196523755120).

Almost surely, 2^{2122210212021} is an apocalyptic number.

It is an amenable number.

2122210212021 is a deficient number, since it is larger than the sum of its proper divisors (1022169869899).

2122210212021 is an equidigital number, since it uses as much as digits as its factorization.

2122210212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9123833 (or 9123827 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2122210212021 its reverse (1202120122212), we get a palindrome (3324330334233).

The spelling of 2122210212021 in words is "two trillion, one hundred twenty-two billion, two hundred ten million, two hundred twelve thousand, twenty-one".