2145220514 has 8 divisors (see below), whose sum is σ = 3407114988. Its totient is φ = 1009515520.

The previous prime is 2145220513. The next prime is 2145220543. The reversal of 2145220514 is 4150225412.

It can be written as a sum of positive squares in 2 ways, for example, as 2033559025 + 111661489 = 45095^2 + 10567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2145220513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31547327 + ... + 31547394.

Almost surely, 2^2145220514 is an apocalyptic number.

2145220514 is a deficient number, since it is larger than the sum of its proper divisors (1261894474).

2145220514 is a wasteful number, since it uses less digits than its factorization.

2145220514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63094740.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2145220514 is about 46316.5252798610. The cubic root of 2145220514 is about 1289.7057827101.

Adding to 2145220514 its reverse (4150225412), we get a palindrome (6295445926).

The spelling of 2145220514 in words is "two billion, one hundred forty-five million, two hundred twenty thousand, five hundred fourteen".