20012122210101 has 24 divisors (see below), whose sum is σ = 31054068840960. Its totient is φ = 11430024080832.

The previous prime is 20012122210063. The next prime is 20012122210127. The reversal of 20012122210101 is 10101222121002.

It is not a de Polignac number, because 20012122210101 - 2⁶ = 20012122210037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012122210901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32277141 + ... + 32891306.

It is an arithmetic number, because the mean of its divisors is an integer number (1293919535040).

Almost surely, 2^{20012122210101} is an apocalyptic number.

20012122210101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20012122210101 is a deficient number, since it is larger than the sum of its proper divisors (11041946630859).

20012122210101 is a wasteful number, since it uses less digits than its factorization.

20012122210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65170553 (or 65170546 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012122210101 its reverse (10101222121002), we get a palindrome (30113344331103).

The spelling of 20012122210101 in words is "twenty trillion, twelve billion, one hundred twenty-two million, two hundred ten thousand, one hundred one".