2122220102021 has 8 divisors (see below), whose sum is σ = 2129052079704. Its totient is φ = 2115388454400.

The previous prime is 2122220101999. The next prime is 2122220102029. The reversal of 2122220102021 is 1202010222212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3958171396 + 2118261930625 = 62914^2 + 1455425^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2122220102021 - 2¹⁰ = 2122220100997 is a prime.

It is a super-2 number, since 2×2122220102021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122220102029) 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, 25217405 + ... + 25301421.

It is an arithmetic number, because the mean of its divisors is an integer number (266131509963).

Almost surely, 2^{2122220102021} is an apocalyptic number.

It is an amenable number.

2122220102021 is a deficient number, since it is larger than the sum of its proper divisors (6831977683).

2122220102021 is an equidigital number, since it uses as much as digits as its factorization.

2122220102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165031.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2122220102021 its reverse (1202010222212), we get a palindrome (3324230324233).

The spelling of 2122220102021 in words is "two trillion, one hundred twenty-two billion, two hundred twenty million, one hundred two thousand, twenty-one".