102212002012121 has 4 divisors (see below), whose sum is σ = 102212506117044. Its totient is φ = 102211497907200.

The previous prime is 102212002012093. The next prime is 102212002012129. The reversal of 102212002012121 is 121210200212201.

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 58424070622096 + 43787931390025 = 7643564^2 + 6617245^2 .

It is a cyclic number.

It is not a de Polignac number, because 102212002012121 - 2³⁴ = 102194822142937 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 102212002012121.

It is not an unprimeable number, because it can be changed into a prime (102212002012129) 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, 251748200 + ... + 252153881.

It is an arithmetic number, because the mean of its divisors is an integer number (25553126529261).

Almost surely, 2^{102212002012121} is an apocalyptic number.

It is an amenable number.

102212002012121 is a deficient number, since it is larger than the sum of its proper divisors (504104923).

102212002012121 is an equidigital number, since it uses as much as digits as its factorization.

102212002012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504104922.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102212002012121 its reverse (121210200212201), we get a palindrome (223422202224322).

The spelling of 102212002012121 in words is "one hundred two trillion, two hundred twelve billion, two million, twelve thousand, one hundred twenty-one".