121011201 has 12 divisors (see below), whose sum is σ = 179518612. Its totient is φ = 78493536.

The previous prime is 121011199. The next prime is 121011223. The reversal of 121011201 is 102110121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56610576 + 64400625 = 7524^2 + 8025^2 .

It is not a de Polignac number, because 121011201 - 2¹ = 121011199 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181366 + ... + 182031.

Almost surely, 2^121011201 is an apocalyptic number.

It is an amenable number.

121011201 is a deficient number, since it is larger than the sum of its proper divisors (58507411).

121011201 is a wasteful number, since it uses less digits than its factorization.

121011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363440 (or 363437 counting only the distinct ones).

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

The square root of 121011201 is about 11000.5091245815. The cubic root of 121011201 is about 494.6240058720.

Adding to 121011201 its reverse (102110121), we get a palindrome (223121322).

The spelling of 121011201 in words is "one hundred twenty-one million, eleven thousand, two hundred one".