20122220021101 has 16 divisors (see below), whose sum is σ = 22007017928448. Its totient is φ = 18246686270400.

The previous prime is 20122220021087. The next prime is 20122220021117. The reversal of 20122220021101 is 10112002222102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20122220021101 - 2¹⁵ = 20122219988333 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 (20122220021161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30268191 + ... + 30925843.

It is an arithmetic number, because the mean of its divisors is an integer number (1375438620528).

Almost surely, 2^{20122220021101} is an apocalyptic number.

It is an amenable number.

20122220021101 is a deficient number, since it is larger than the sum of its proper divisors (1884797907347).

20122220021101 is a wasteful number, since it uses less digits than its factorization.

20122220021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664692.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20122220021101 its reverse (10112002222102), we get a palindrome (30234222243203).

The spelling of 20122220021101 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty million, twenty-one thousand, one hundred one".