101102210212121 has 4 divisors (see below), whose sum is σ = 101102263245492. Its totient is φ = 101102157178752.

The previous prime is 101102210212103. The next prime is 101102210212207. The reversal of 101102210212121 is 121212012201101.

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 3774514581721 + 97327695630400 = 1942811^2 + 9865480^2 .

It is a cyclic number.

It is not a de Polignac number, because 101102210212121 - 2³⁸ = 100827332305177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101102210212121.

It is not an unprimeable number, because it can be changed into a prime (101102210214121) 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, 23546180 + ... + 27506853.

It is an arithmetic number, because the mean of its divisors is an integer number (25275565811373).

Almost surely, 2^{101102210212121} is an apocalyptic number.

It is an amenable number.

101102210212121 is a deficient number, since it is larger than the sum of its proper divisors (53033371).

101102210212121 is an equidigital number, since it uses as much as digits as its factorization.

101102210212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53033370.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101102210212121 its reverse (121212012201101), we get a palindrome (222314222413222).

The spelling of 101102210212121 in words is "one hundred one trillion, one hundred two billion, two hundred ten million, two hundred twelve thousand, one hundred twenty-one".