121151133 has 20 divisors (see below), whose sum is σ = 181274940. Its totient is φ = 80635392.

The previous prime is 121151113. The next prime is 121151137. The reversal of 121151133 is 331151121.

121151133 is a `hidden beast` number, since 121 + 1 + 511 + 33 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 89813529 + 31337604 = 9477^2 + 5598^2 .

It is not a de Polignac number, because 121151133 - 2⁸ = 121150877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121151137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 97963 + ... + 99191.

It is an arithmetic number, because the mean of its divisors is an integer number (9063747).

Almost surely, 2^121151133 is an apocalyptic number.

It is an amenable number.

121151133 is a deficient number, since it is larger than the sum of its proper divisors (60123807).

121151133 is a wasteful number, since it uses less digits than its factorization.

121151133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458 (or 2449 counting only the distinct ones).

The product of its digits is 90, while the sum is 18.

The square root of 121151133 is about 11006.8675380419. The cubic root of 121151133 is about 494.8145862050.

The spelling of 121151133 in words is "one hundred twenty-one million, one hundred fifty-one thousand, one hundred thirty-three".