10222220122021 has 4 divisors (see below), whose sum is σ = 10231964851500. Its totient is φ = 10212475392544.

The previous prime is 10222220122001. The next prime is 10222220122099. The reversal of 10222220122021 is 12022102222201.

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 3808309317121 + 6413910804900 = 1951489^2 + 2532570^2 .

It is a cyclic number.

It is not a de Polignac number, because 10222220122021 - 2²¹ = 10222218024869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10222220122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222220122001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4872363166 + ... + 4872365263.

It is an arithmetic number, because the mean of its divisors is an integer number (2557991212875).

Almost surely, 2^{10222220122021} is an apocalyptic number.

It is an amenable number.

10222220122021 is a deficient number, since it is larger than the sum of its proper divisors (9744729479).

10222220122021 is an equidigital number, since it uses as much as digits as its factorization.

10222220122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9744729478.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10222220122021 its reverse (12022102222201), we get a palindrome (22244322344222).

The spelling of 10222220122021 in words is "ten trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-two thousand, twenty-one".