2151242122 has 16 divisors (see below), whose sum is σ = 3289807872. Its totient is φ = 1054665040.

The previous prime is 2151242099. The next prime is 2151242131. The reversal of 2151242122 is 2212421512.

It is a junction number, because it is equal to n+sod(n) for n = 2151242093 and 2151242102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192903 + ... + 203749.

It is an arithmetic number, because the mean of its divisors is an integer number (205612992).

Almost surely, 2^2151242122 is an apocalyptic number.

2151242122 is a deficient number, since it is larger than the sum of its proper divisors (1138565750).

2151242122 is a wasteful number, since it uses less digits than its factorization.

2151242122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12773.

The product of its digits is 640, while the sum is 22.

The square root of 2151242122 is about 46381.4846894750. The cubic root of 2151242122 is about 1290.9113848796.

Adding to 2151242122 its reverse (2212421512), we get a palindrome (4363663634).

The spelling of 2151242122 in words is "two billion, one hundred fifty-one million, two hundred forty-two thousand, one hundred twenty-two".