2154122013 has 8 divisors (see below), whose sum is σ = 2872650528. Its totient is φ = 1435837424.

The previous prime is 2154122011. The next prime is 2154122077. The reversal of 2154122013 is 3102214512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154122013 - 2¹ = 2154122011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39270 + ... + 76487.

It is an arithmetic number, because the mean of its divisors is an integer number (359081316).

Almost surely, 2^2154122013 is an apocalyptic number.

It is an amenable number.

2154122013 is a deficient number, since it is larger than the sum of its proper divisors (718528515).

2154122013 is a wasteful number, since it uses less digits than its factorization.

2154122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121963.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2154122013 is about 46412.5200026889. The cubic root of 2154122013 is about 1291.4871803399.

Adding to 2154122013 its reverse (3102214512), we get a palindrome (5256336525).

The spelling of 2154122013 in words is "two billion, one hundred fifty-four million, one hundred twenty-two thousand, thirteen".