2215151242 has 4 divisors (see below), whose sum is σ = 3322726866. Its totient is φ = 1107575620.

The previous prime is 2215151209. The next prime is 2215151251. The reversal of 2215151242 is 2421515122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1379305321 + 835845921 = 37139^2 + 28911^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553787809 + ... + 553787812.

Almost surely, 2^2215151242 is an apocalyptic number.

2215151242 is a deficient number, since it is larger than the sum of its proper divisors (1107575624).

2215151242 is a wasteful number, since it uses less digits than its factorization.

2215151242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107575623.

The product of its digits is 1600, while the sum is 25.

The square root of 2215151242 is about 47065.3932523675. The cubic root of 2215151242 is about 1303.5703121668.

Adding to 2215151242 its reverse (2421515122), we get a palindrome (4636666364).

The spelling of 2215151242 in words is "two billion, two hundred fifteen million, one hundred fifty-one thousand, two hundred forty-two".