2135354121 has 48 divisors (see below), whose sum is σ = 3394560000. Its totient is φ = 1288366560.

The previous prime is 2135354077. The next prime is 2135354191. The reversal of 2135354121 is 1214535312.

2135354121 is a `hidden beast` number, since 2 + 1 + 3 + 535 + 4 + 121 = 666.

It is not a de Polignac number, because 2135354121 - 2²² = 2131159817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2135354191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 416230 + ... + 421328.

It is an arithmetic number, because the mean of its divisors is an integer number (70720000).

Almost surely, 2^2135354121 is an apocalyptic number.

It is an amenable number.

2135354121 is a deficient number, since it is larger than the sum of its proper divisors (1259205879).

2135354121 is a wasteful number, since it uses less digits than its factorization.

2135354121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234 (or 5231 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 2135354121 is about 46209.8920254095. The cubic root of 2135354121 is about 1287.7255197502.

Adding to 2135354121 its reverse (1214535312), we get a palindrome (3349889433).

The spelling of 2135354121 in words is "two billion, one hundred thirty-five million, three hundred fifty-four thousand, one hundred twenty-one".