101121212021201 has 4 divisors (see below), whose sum is σ = 101129358429492. Its totient is φ = 101113065612912.

The previous prime is 101121212021161. The next prime is 101121212021209. The reversal of 101121212021201 is 102120212121101.

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 38860274907601 + 62260937113600 = 6233801^2 + 7890560^2 .

It is a cyclic number.

It is not a de Polignac number, because 101121212021201 - 2³⁴ = 101104032152017 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 101121212021201.

It is not an unprimeable number, because it can be changed into a prime (101121212021209) 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, 4073185526 + ... + 4073210351.

It is an arithmetic number, because the mean of its divisors is an integer number (25282339607373).

Almost surely, 2^{101121212021201} is an apocalyptic number.

It is an amenable number.

101121212021201 is a deficient number, since it is larger than the sum of its proper divisors (8146408291).

101121212021201 is an equidigital number, since it uses as much as digits as its factorization.

101121212021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146408290.

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

Adding to 101121212021201 its reverse (102120212121101), we get a palindrome (203241424142302).

The spelling of 101121212021201 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twelve million, twenty-one thousand, two hundred one".