2121021020230 has 48 divisors (see below), whose sum is σ = 4594301719920. Its totient is φ = 702131091648.

The previous prime is 2121021020227. The next prime is 2121021020233. The reversal of 2121021020230 is 320201201212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121021020227) and next prime (2121021020233).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121021020233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74617072 + ... + 74645491.

It is an arithmetic number, because the mean of its divisors is an integer number (95714619165).

Almost surely, 2^{2121021020230} is an apocalyptic number.

2121021020230 is an abundant number, since it is smaller than the sum of its proper divisors (2473280699690).

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

2121021020230 is a wasteful number, since it uses less digits than its factorization.

2121021020230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149262613 (or 149262606 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2121021020230 its reverse (320201201212), we get a palindrome (2441222221442).

The spelling of 2121021020230 in words is "two trillion, one hundred twenty-one billion, twenty-one million, twenty thousand, two hundred thirty".