2122154403 has 16 divisors (see below), whose sum is σ = 2998464000. Its totient is φ = 1331307360.

The previous prime is 2122154357. The next prime is 2122154407. The reversal of 2122154403 is 3044512212.

It is not a de Polignac number, because 2122154403 - 2⁸ = 2122154147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122154407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116443 + ... + 133428.

It is an arithmetic number, because the mean of its divisors is an integer number (187404000).

Almost surely, 2^2122154403 is an apocalyptic number.

2122154403 is a deficient number, since it is larger than the sum of its proper divisors (876309597).

2122154403 is a wasteful number, since it uses less digits than its factorization.

2122154403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250042.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2122154403 is about 46066.8471137325. The cubic root of 2122154403 is about 1285.0666698693.

Adding to 2122154403 its reverse (3044512212), we get a palindrome (5166666615).

The spelling of 2122154403 in words is "two billion, one hundred twenty-two million, one hundred fifty-four thousand, four hundred three".