2142121324 has 48 divisors (see below), whose sum is σ = 4316691456. Its totient is φ = 911131200.

The previous prime is 2142121321. The next prime is 2142121349. The reversal of 2142121324 is 4231212412.

It is a junction number, because it is equal to n+sod(n) for n = 2142121295 and 2142121304.

It is not an unprimeable number, because it can be changed into a prime (2142121321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3394489 + ... + 3395119.

It is an arithmetic number, because the mean of its divisors is an integer number (89931072).

Almost surely, 2^2142121324 is an apocalyptic number.

It is an amenable number.

2142121324 is an abundant number, since it is smaller than the sum of its proper divisors (2174570132).

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

2142121324 is a wasteful number, since it uses less digits than its factorization.

2142121324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1364 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 2142121324 is about 46283.0565542078. The cubic root of 2142121324 is about 1289.0844060852.

Adding to 2142121324 its reverse (4231212412), we get a palindrome (6373333736).

The spelling of 2142121324 in words is "two billion, one hundred forty-two million, one hundred twenty-one thousand, three hundred twenty-four".