121000101201 has 96 divisors (see below), whose sum is σ = 218266214400. Its totient is φ = 63033189120.

The previous prime is 121000101199. The next prime is 121000101203. The reversal of 121000101201 is 102101000121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121000101199) and next prime (121000101203).

It is not a de Polignac number, because 121000101201 - 2¹ = 121000101199 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121000101203) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6633045 + ... + 6651261.

It is an arithmetic number, because the mean of its divisors is an integer number (2273606400).

Almost surely, 2^121000101201 is an apocalyptic number.

It is an amenable number.

121000101201 is a deficient number, since it is larger than the sum of its proper divisors (97266113199).

121000101201 is a wasteful number, since it uses less digits than its factorization.

121000101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459 (or 18456 counting only the distinct ones).

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

Adding to 121000101201 its reverse (102101000121), we get a palindrome (223101101322).

The spelling of 121000101201 in words is "one hundred twenty-one billion, one hundred one thousand, two hundred one".