2154401211 has 32 divisors (see below), whose sum is σ = 3124396800. Its totient is φ = 1315128320.

The previous prime is 2154401113. The next prime is 2154401261. The reversal of 2154401211 is 1121044512.

It is a cyclic number.

It is not a de Polignac number, because 2154401211 - 2³⁰ = 1080659387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154401261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 874900 + ... + 877358.

It is an arithmetic number, because the mean of its divisors is an integer number (97637400).

Almost surely, 2^2154401211 is an apocalyptic number.

2154401211 is a deficient number, since it is larger than the sum of its proper divisors (969995589).

2154401211 is a wasteful number, since it uses less digits than its factorization.

2154401211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2154401211 is about 46415.5276927883. The cubic root of 2154401211 is about 1291.5429749295.

Adding to 2154401211 its reverse (1121044512), we get a palindrome (3275445723).

The spelling of 2154401211 in words is "two billion, one hundred fifty-four million, four hundred one thousand, two hundred eleven".