20122201111109 has 4 divisors (see below), whose sum is σ = 20123272999116. Its totient is φ = 20121129223104.

The previous prime is 20122201111091. The next prime is 20122201111121. The reversal of 20122201111109 is 90111110222102.

It is a happy number.

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 14634473203009 + 5487727908100 = 3825503^2 + 2342590^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122201111109 - 2²⁴ = 20122184333893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122201111009) 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, 535915844 + ... + 535953389.

It is an arithmetic number, because the mean of its divisors is an integer number (5030818249779).

Almost surely, 2^{20122201111109} is an apocalyptic number.

It is an amenable number.

20122201111109 is a deficient number, since it is larger than the sum of its proper divisors (1071888007).

20122201111109 is a wasteful number, since it uses less digits than its factorization.

20122201111109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071888006.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 20122201111109 in words is "twenty trillion, one hundred twenty-two billion, two hundred one million, one hundred eleven thousand, one hundred nine".