2121530354 has 8 divisors (see below), whose sum is σ = 3183679488. Its totient is φ = 1060303860.

The previous prime is 2121530311. The next prime is 2121530371. The reversal of 2121530354 is 4530351212.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224882 + ... + 234125.

It is an arithmetic number, because the mean of its divisors is an integer number (397959936).

Almost surely, 2^2121530354 is an apocalyptic number.

2121530354 is a deficient number, since it is larger than the sum of its proper divisors (1062149134).

2121530354 is a wasteful number, since it uses less digits than its factorization.

2121530354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461320.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2121530354 is about 46060.0733173537. The cubic root of 2121530354 is about 1284.9406936146.

Adding to 2121530354 its reverse (4530351212), we get a palindrome (6651881566).

The spelling of 2121530354 in words is "two billion, one hundred twenty-one million, five hundred thirty thousand, three hundred fifty-four".