2154061211 has 6 divisors (see below), whose sum is σ = 2288224500. Its totient is φ = 2027351456.

The previous prime is 2154061207. The next prime is 2154061213. The reversal of 2154061211 is 1121604512.

It is not a de Polignac number, because 2154061211 - 2² = 2154061207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154061213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3726461 + ... + 3727038.

It is an arithmetic number, because the mean of its divisors is an integer number (381370750).

Almost surely, 2^2154061211 is an apocalyptic number.

2154061211 is a deficient number, since it is larger than the sum of its proper divisors (134163289).

2154061211 is an equidigital number, since it uses as much as digits as its factorization.

2154061211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453533 (or 7453516 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2154061211 is about 46411.8649808430. The cubic root of 2154061211 is about 1291.4750291028.

Adding to 2154061211 its reverse (1121604512), we get a palindrome (3275665723).

The spelling of 2154061211 in words is "two billion, one hundred fifty-four million, sixty-one thousand, two hundred eleven".