2154240222 has 16 divisors (see below), whose sum is σ = 4311091200. Its totient is φ = 717644952.

The previous prime is 2154240217. The next prime is 2154240223. The reversal of 2154240222 is 2220424512.

It is a junction number, because it is equal to n+sod(n) for n = 2154240192 and 2154240201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154240223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97972 + ... + 117927.

It is an arithmetic number, because the mean of its divisors is an integer number (269443200).

Almost surely, 2^2154240222 is an apocalyptic number.

2154240222 is an abundant number, since it is smaller than the sum of its proper divisors (2156850978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154240222 is a wasteful number, since it uses less digits than its factorization.

2154240222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217567.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2154240222 is about 46413.7934454834. The cubic root of 2154240222 is about 1291.5108036715.

Adding to 2154240222 its reverse (2220424512), we get a palindrome (4374664734).

The spelling of 2154240222 in words is "two billion, one hundred fifty-four million, two hundred forty thousand, two hundred twenty-two".