2102121230 has 64 divisors (see below), whose sum is σ = 4384497600. Its totient is φ = 717158400.

The previous prime is 2102121223. The next prime is 2102121233. The reversal of 2102121230 is 321212012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102121233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651020 + ... + 654240.

It is an arithmetic number, because the mean of its divisors is an integer number (68507775).

Almost surely, 2^2102121230 is an apocalyptic number.

2102121230 is an abundant number, since it is smaller than the sum of its proper divisors (2282376370).

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

2102121230 is a wasteful number, since it uses less digits than its factorization.

2102121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2102121230 is about 45848.8956246495. The cubic root of 2102121230 is about 1281.0101949611.

Adding to 2102121230 its reverse (321212012), we get a palindrome (2423333242).

The spelling of 2102121230 in words is "two billion, one hundred two million, one hundred twenty-one thousand, two hundred thirty".