121002101201 has 4 divisors (see below), whose sum is σ = 123953372004. Its totient is φ = 118050830400.

The previous prime is 121002101191. The next prime is 121002101243. The reversal of 121002101201 is 102101200121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102101200121 = 73 ⋅1398646577.

It can be written as a sum of positive squares in 2 ways, for example, as 6524762176 + 114477339025 = 80776^2 + 338345^2 .

It is a cyclic number.

It is not a de Polignac number, because 121002101201 - 2¹⁴ = 121002084817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121002101251) 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, 1475635340 + ... + 1475635421.

It is an arithmetic number, because the mean of its divisors is an integer number (30988343001).

Almost surely, 2^121002101201 is an apocalyptic number.

It is an amenable number.

121002101201 is a deficient number, since it is larger than the sum of its proper divisors (2951270803).

121002101201 is an equidigital number, since it uses as much as digits as its factorization.

121002101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951270802.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121002101201 its reverse (102101200121), we get a palindrome (223103301322).

The spelling of 121002101201 in words is "one hundred twenty-one billion, two million, one hundred one thousand, two hundred one".