101212100021201 has 4 divisors (see below), whose sum is σ = 108997646176692. Its totient is φ = 93426553865712.

The previous prime is 101212100021173. The next prime is 101212100021213. The reversal of 101212100021201 is 102120001212101.

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 21794416065601 + 79417683955600 = 4668449^2 + 8911660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212100021201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101212100021251) 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, 3892773077726 + ... + 3892773077751.

It is an arithmetic number, because the mean of its divisors is an integer number (27249411544173).

Almost surely, 2^{101212100021201} is an apocalyptic number.

It is an amenable number.

101212100021201 is a deficient number, since it is larger than the sum of its proper divisors (7785546155491).

101212100021201 is an equidigital number, since it uses as much as digits as its factorization.

101212100021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785546155490.

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

Adding to 101212100021201 its reverse (102120001212101), we get a palindrome (203332101233302).

The spelling of 101212100021201 in words is "one hundred one trillion, two hundred twelve billion, one hundred million, twenty-one thousand, two hundred one".