121101120221201 has 6 divisors (see below), whose sum is σ = 125133623705106. Its totient is φ = 117194632471200.

The previous prime is 121101120221141. The next prime is 121101120221209. The reversal of 121101120221201 is 102122021101121.

It can be written as a sum of positive squares in only one way, i.e., 106257977038801 + 14843143182400 = 10308151^2 + 3852680^2 .

It is not a de Polignac number, because 121101120221201 - 2¹⁴ = 121101120204817 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 121101120221201.

It is not an unprimeable number, because it can be changed into a prime (121101120221209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63007865960 + ... + 63007867881.

It is an arithmetic number, because the mean of its divisors is an integer number (20855603950851).

Almost surely, 2^{121101120221201} is an apocalyptic number.

It is an amenable number.

121101120221201 is a deficient number, since it is larger than the sum of its proper divisors (4032503483905).

121101120221201 is an equidigital number, since it uses as much as digits as its factorization.

121101120221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126015733903 (or 126015733872 counting only the distinct ones).

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

Adding to 121101120221201 its reverse (102122021101121), we get a palindrome (223223141322322).

The spelling of 121101120221201 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twenty million, two hundred twenty-one thousand, two hundred one".