121000000101201 has 12 divisors (see below), whose sum is σ = 188222222379828. Its totient is φ = 74461538523744.

The previous prime is 121000000101193. The next prime is 121000000101217. The reversal of 121000000101201 is 102101000000121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29957888624400 + 91042111476801 = 5473380^2 + 9541599^2 .

It is not a de Polignac number, because 121000000101201 - 2³ = 121000000101193 is a prime.

It is a super-3 number, since 3×121000000101201³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (121000000101241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 517094017410 + ... + 517094017643.

It is an arithmetic number, because the mean of its divisors is an integer number (15685185198319).

Almost surely, 2^{121000000101201} is an apocalyptic number.

It is an amenable number.

121000000101201 is a deficient number, since it is larger than the sum of its proper divisors (67222222278627).

121000000101201 is a wasteful number, since it uses less digits than its factorization.

121000000101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034188035072 (or 1034188035069 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121000000101201 its reverse (102101000000121), we get a palindrome (223101000101322).

The spelling of 121000000101201 in words is "one hundred twenty-one trillion, one hundred one thousand, two hundred one".