2202122211021 has 6 divisors (see below), whose sum is σ = 3180843193710. Its totient is φ = 1468081474008.

The previous prime is 2202122210993. The next prime is 2202122211043. The reversal of 2202122211021 is 1201122212022.

It is a happy number.

2202122211021 is a `hidden beast` number, since 220 + 212 + 2 + 211 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1711947195396 + 490175015625 = 1308414^2 + 700125^2 .

It is not a de Polignac number, because 2202122211021 - 2¹⁰ = 2202122209997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202122210985 and 2202122211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202122711021) 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 5 ways as a sum of consecutive naturals, for example, 122340122826 + ... + 122340122843.

It is an arithmetic number, because the mean of its divisors is an integer number (530140532285).

Almost surely, 2^{2202122211021} is an apocalyptic number.

It is an amenable number.

2202122211021 is a deficient number, since it is larger than the sum of its proper divisors (978720982689).

2202122211021 is a wasteful number, since it uses less digits than its factorization.

2202122211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244680245675 (or 244680245672 counting only the distinct ones).

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

Adding to 2202122211021 its reverse (1201122212022), we get a palindrome (3403244423043).

The spelling of 2202122211021 in words is "two trillion, two hundred two billion, one hundred twenty-two million, two hundred eleven thousand, twenty-one".