2121223030 has 16 divisors (see below), whose sum is σ = 3818736864. Its totient is φ = 848370240.

The previous prime is 2121223003. The next prime is 2121223031. The reversal of 2121223030 is 303221212.

It is a junction number, because it is equal to n+sod(n) for n = 2121222995 and 2121223013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121223031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109690 + ... + 127570.

It is an arithmetic number, because the mean of its divisors is an integer number (238671054).

Almost surely, 2^2121223030 is an apocalyptic number.

2121223030 is a deficient number, since it is larger than the sum of its proper divisors (1697513834).

2121223030 is a wasteful number, since it uses less digits than its factorization.

2121223030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29751.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2121223030 is about 46056.7370750469. The cubic root of 2121223030 is about 1284.8786452945.

Adding to 2121223030 its reverse (303221212), we get a palindrome (2424444242).

The spelling of 2121223030 in words is "two billion, one hundred twenty-one million, two hundred twenty-three thousand, thirty".