2143221054 has 32 divisors (see below), whose sum is σ = 4657038624. Its totient is φ = 653614080.

The previous prime is 2143221023. The next prime is 2143221077. The reversal of 2143221054 is 4501223412.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112767 + ... + 130394.

It is an arithmetic number, because the mean of its divisors is an integer number (145532457).

Almost surely, 2^2143221054 is an apocalyptic number.

2143221054 is an abundant number, since it is smaller than the sum of its proper divisors (2513817570).

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

2143221054 is a wasteful number, since it uses less digits than its factorization.

2143221054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243292.

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

The square root of 2143221054 is about 46294.9355113494. The cubic root of 2143221054 is about 1289.3049666185.

Adding to 2143221054 its reverse (4501223412), we get a palindrome (6644444466).

It can be divided in two parts, 21432 and 21054, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 2143221054 in words is "two billion, one hundred forty-three million, two hundred twenty-one thousand, fifty-four".