12021021030 has 32 divisors (see below), whose sum is σ = 28858392288. Its totient is φ = 3204723200.

The previous prime is 12021021007. The next prime is 12021021031. The reversal of 12021021030 is 3012012021.

It is a junction number, because it is equal to n+sod(n) for n = 12021020997 and 12021021015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021021031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59560 + ... + 166100.

It is an arithmetic number, because the mean of its divisors is an integer number (901824759).

Almost surely, 2^12021021030 is an apocalyptic number.

12021021030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021021030 is an abundant number, since it is smaller than the sum of its proper divisors (16837371258).

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

12021021030 is a wasteful number, since it uses less digits than its factorization.

12021021030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110312.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12021021030 its reverse (3012012021), we get a palindrome (15033033051).

Subtracting from 12021021030 its reverse (3012012021), we obtain a palindrome (9009009009).

The spelling of 12021021030 in words is "twelve billion, twenty-one million, twenty-one thousand, thirty".