2121151454 has 8 divisors (see below), whose sum is σ = 3249423648. Its totient is φ = 1038010240.

The previous prime is 2121151453. The next prime is 2121151463. The reversal of 2121151454 is 4541511212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121151451) 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, 11282627 + ... + 11282814.

It is an arithmetic number, because the mean of its divisors is an integer number (406177956).

Almost surely, 2^2121151454 is an apocalyptic number.

2121151454 is a deficient number, since it is larger than the sum of its proper divisors (1128272194).

2121151454 is a wasteful number, since it uses less digits than its factorization.

2121151454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22565490.

The product of its digits is 1600, while the sum is 26.

The square root of 2121151454 is about 46055.9600269064. The cubic root of 2121151454 is about 1284.8641933318.

Adding to 2121151454 its reverse (4541511212), we get a palindrome (6662662666).

The spelling of 2121151454 in words is "two billion, one hundred twenty-one million, one hundred fifty-one thousand, four hundred fifty-four".