2121321021230 has 16 divisors (see below), whose sum is σ = 3819227769504. Its totient is φ = 848339534880.

The previous prime is 2121321021187. The next prime is 2121321021241. The reversal of 2121321021230 is 321201231212.

It is a super-2 number, since 2×2121321021230² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 23562026 + ... + 23651885.

It is an arithmetic number, because the mean of its divisors is an integer number (238701735594).

Almost surely, 2^{2121321021230} is an apocalyptic number.

2121321021230 is a deficient number, since it is larger than the sum of its proper divisors (1697906748274).

2121321021230 is a wasteful number, since it uses less digits than its factorization.

2121321021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47218411.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121321021230 its reverse (321201231212), we get a palindrome (2442522252442).

The spelling of 2121321021230 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-one million, twenty-one thousand, two hundred thirty".