101121220220201 has 4 divisors (see below), whose sum is σ = 101121793162500. Its totient is φ = 101120647277904.

The previous prime is 101121220220183. The next prime is 101121220220231. The reversal of 101121220220201 is 102022022121101.

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 28340716960000 + 72780503260201 = 5323600^2 + 8531149^2 .

It is a cyclic number.

It is not a de Polignac number, because 101121220220201 - 2¹⁰ = 101121220219177 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 101121220220201.

It is not an unprimeable number, because it can be changed into a prime (101121220220231) 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, 286206326 + ... + 286559423.

It is an arithmetic number, because the mean of its divisors is an integer number (25280448290625).

Almost surely, 2^{101121220220201} is an apocalyptic number.

It is an amenable number.

101121220220201 is a deficient number, since it is larger than the sum of its proper divisors (572942299).

101121220220201 is an equidigital number, since it uses as much as digits as its factorization.

101121220220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572942298.

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

Adding to 101121220220201 its reverse (102022022121101), we get a palindrome (203143242341302).

The spelling of 101121220220201 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, two hundred one".