20100210122101 has 4 divisors (see below), whose sum is σ = 20100280617900. Its totient is φ = 20100139626304.

The previous prime is 20100210122093. The next prime is 20100210122137. The reversal of 20100210122101 is 10122101200102.

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 19235680222500 + 864529899601 = 4385850^2 + 929801^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100210122101 - 2³ = 20100210122093 is a prime.

It is a super-2 number, since 2×20100210122101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100210122701) 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, 34818466 + ... + 35391043.

It is an arithmetic number, because the mean of its divisors is an integer number (5025070154475).

Almost surely, 2^{20100210122101} is an apocalyptic number.

It is an amenable number.

20100210122101 is a deficient number, since it is larger than the sum of its proper divisors (70495799).

20100210122101 is an equidigital number, since it uses as much as digits as its factorization.

20100210122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70495798.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20100210122101 its reverse (10122101200102), we get a palindrome (30222311322203).

The spelling of 20100210122101 in words is "twenty trillion, one hundred billion, two hundred ten million, one hundred twenty-two thousand, one hundred one".