121000136 has 16 divisors (see below), whose sum is σ = 227113200. Its totient is φ = 60436624.

The previous prime is 121000133. The next prime is 121000147. The reversal of 121000136 is 631000121.

It is a self number, because there is not a number n which added to its sum of digits gives 121000136.

It is not an unprimeable number, because it can be changed into a prime (121000133) 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, 731 + ... + 15573.

It is an arithmetic number, because the mean of its divisors is an integer number (14194575).

Almost surely, 2^121000136 is an apocalyptic number.

It is an amenable number.

121000136 is a deficient number, since it is larger than the sum of its proper divisors (106113064).

121000136 is a wasteful number, since it uses less digits than its factorization.

121000136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15868 (or 15864 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121000136 is about 11000.0061818164. The cubic root of 121000136 is about 494.6089296328.

Adding to 121000136 its reverse (631000121), we get a palindrome (752000257).

The spelling of 121000136 in words is "one hundred twenty-one million, one hundred thirty-six", and thus it is an aban number.