2151122042 has 16 divisors (see below), whose sum is σ = 3303048672. Its totient is φ = 1050126000.

The previous prime is 2151122041. The next prime is 2151122059. The reversal of 2151122042 is 2402211512.

It is not an unprimeable number, because it can be changed into a prime (2151122041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388292 + ... + 393792.

It is an arithmetic number, because the mean of its divisors is an integer number (206440542).

Almost surely, 2^2151122042 is an apocalyptic number.

2151122042 is a deficient number, since it is larger than the sum of its proper divisors (1151926630).

2151122042 is a wasteful number, since it uses less digits than its factorization.

2151122042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10093.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2151122042 is about 46380.1901893470. The cubic root of 2151122042 is about 1290.8873653419.

Adding to 2151122042 its reverse (2402211512), we get a palindrome (4553333554).

The spelling of 2151122042 in words is "two billion, one hundred fifty-one million, one hundred twenty-two thousand, forty-two".