121001236 has 6 divisors (see below), whose sum is σ = 211752170. Its totient is φ = 60500616.

The previous prime is 121001213. The next prime is 121001239. The reversal of 121001236 is 632100121.

It can be written as a sum of positive squares in only one way, i.e., 91776400 + 29224836 = 9580^2 + 5406^2 .

It is a super-2 number, since 2×121001236² = 29282598227055392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001239) 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 as a sum of consecutive naturals, namely, 15125151 + ... + 15125158.

Almost surely, 2^121001236 is an apocalyptic number.

It is an amenable number.

121001236 is a deficient number, since it is larger than the sum of its proper divisors (90750934).

121001236 is a wasteful number, since it uses less digits than its factorization.

121001236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30250313 (or 30250311 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 121001236 is about 11000.0561816747. The cubic root of 121001236 is about 494.6104284415.

Adding to 121001236 its reverse (632100121), we get a palindrome (753101357).

The spelling of 121001236 in words is "one hundred twenty-one million, one thousand, two hundred thirty-six".