2121324102 has 24 divisors (see below), whose sum is σ = 4611900384. Its totient is φ = 704692944.

The previous prime is 2121324001. The next prime is 2121324131. The reversal of 2121324102 is 2014231212.

It is a happy number.

It is a super-2 number, since 2×2121324102² = 9000031891452212808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195838 + ... + 206385.

It is an arithmetic number, because the mean of its divisors is an integer number (192162516).

Almost surely, 2^2121324102 is an apocalyptic number.

2121324102 is an abundant number, since it is smaller than the sum of its proper divisors (2490576282).

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

2121324102 is a wasteful number, since it uses less digits than its factorization.

2121324102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402524 (or 402521 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2121324102 is about 46057.8343173015. The cubic root of 2121324102 is about 1284.8990522626.

Adding to 2121324102 its reverse (2014231212), we get a palindrome (4135555314).

The spelling of 2121324102 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, one hundred two".