20022101222201 has 6 divisors (see below), whose sum is σ = 21680736826590. Its totient is φ = 18481939589568.

The previous prime is 20022101222143. The next prime is 20022101222213. The reversal of 20022101222201 is 10222210122002.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1987648825600 + 18034452396601 = 1409840^2 + 4246699^2 .

It is not a de Polignac number, because 20022101222201 - 2¹⁴ = 20022101205817 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 20022101222201.

It is not an unprimeable number, because it can be changed into a prime (20022101227201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59236985696 + ... + 59236986033.

It is an arithmetic number, because the mean of its divisors is an integer number (3613456137765).

Almost surely, 2^{20022101222201} is an apocalyptic number.

It is an amenable number.

20022101222201 is a deficient number, since it is larger than the sum of its proper divisors (1658635604389).

20022101222201 is a wasteful number, since it uses less digits than its factorization.

20022101222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118473971755 (or 118473971742 counting only the distinct ones).

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

Adding to 20022101222201 its reverse (10222210122002), we get a palindrome (30244311344203).

The spelling of 20022101222201 in words is "twenty trillion, twenty-two billion, one hundred one million, two hundred twenty-two thousand, two hundred one".