12021322110 has 64 divisors (see below), whose sum is σ = 33089444352. Its totient is φ = 2738007936.

The previous prime is 12021322051. The next prime is 12021322111. The reversal of 12021322110 is 1122312021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021322110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021322111) 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, 41709 + ... + 160568.

It is an arithmetic number, because the mean of its divisors is an integer number (517022568).

Almost surely, 2^12021322110 is an apocalyptic number.

12021322110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021322110 is an abundant number, since it is smaller than the sum of its proper divisors (21068122242).

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

12021322110 is a wasteful number, since it uses less digits than its factorization.

12021322110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202577.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021322110 its reverse (1122312021), we get a palindrome (13143634131).

The spelling of 12021322110 in words is "twelve billion, twenty-one million, three hundred twenty-two thousand, one hundred ten".