101212010200121 has 4 divisors (see below), whose sum is σ = 101212912758132. Its totient is φ = 101211107642112.

The previous prime is 101212010200079. The next prime is 101212010200141. The reversal of 101212010200121 is 121002010212101.

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 64305644046400 + 36906366153721 = 8019080^2 + 6075061^2 .

It is a cyclic number.

It is not a de Polignac number, because 101212010200121 - 2³⁰ = 101210936458297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101212010200096 and 101212010200105.

It is not an unprimeable number, because it can be changed into a prime (101212010200141) 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, 451110776 + ... + 451335081.

It is an arithmetic number, because the mean of its divisors is an integer number (25303228189533).

Almost surely, 2^{101212010200121} is an apocalyptic number.

It is an amenable number.

101212010200121 is a deficient number, since it is larger than the sum of its proper divisors (902558011).

101212010200121 is an equidigital number, since it uses as much as digits as its factorization.

101212010200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902558010.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101212010200121 its reverse (121002010212101), we get a palindrome (222214020412222).

The spelling of 101212010200121 in words is "one hundred one trillion, two hundred twelve billion, ten million, two hundred thousand, one hundred twenty-one".