20122202212201 has 4 divisors (see below), whose sum is σ = 20122226377812. Its totient is φ = 20122178046592.

The previous prime is 20122202212181. The next prime is 20122202212267. The reversal of 20122202212201 is 10221220222102.

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 1975036729600 + 18147165482601 = 1405360^2 + 4259949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122202212201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122202212291) 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, 10787500 + ... + 12514573.

It is an arithmetic number, because the mean of its divisors is an integer number (5030556594453).

Almost surely, 2^{20122202212201} is an apocalyptic number.

It is an amenable number.

20122202212201 is a deficient number, since it is larger than the sum of its proper divisors (24165611).

20122202212201 is an equidigital number, since it uses as much as digits as its factorization.

20122202212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24165610.

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

Adding to 20122202212201 its reverse (10221220222102), we get a palindrome (30343422434303).

The spelling of 20122202212201 in words is "twenty trillion, one hundred twenty-two billion, two hundred two million, two hundred twelve thousand, two hundred one".