20122212121101 has 6 divisors (see below), whose sum is σ = 29065417508270. Its totient is φ = 13414808080728.

The previous prime is 20122212121091. The next prime is 20122212121111. The reversal of 20122212121101 is 10112121222102.

20122212121101 is a `hidden beast` number, since 201 + 222 + 121 + 21 + 101 = 666.

It is an interprime number because it is at equal distance from previous prime (20122212121091) and next prime (20122212121111).

It can be written as a sum of positive squares in only one way, i.e., 18266007515625 + 1856204605476 = 4273875^2 + 1362426^2 .

It is not a de Polignac number, because 20122212121101 - 2¹³ = 20122212112909 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 (20122212121111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117900673386 + ... + 1117900673403.

Almost surely, 2^{20122212121101} is an apocalyptic number.

It is an amenable number.

20122212121101 is a deficient number, since it is larger than the sum of its proper divisors (8943205387169).

20122212121101 is a wasteful number, since it uses less digits than its factorization.

20122212121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235801346795 (or 2235801346792 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20122212121101 its reverse (10112121222102), we get a palindrome (30234333343203).

The spelling of 20122212121101 in words is "twenty trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred one".