1230021210 has 64 divisors (see below), whose sum is σ = 3241067904. Its totient is φ = 296275200.

The previous prime is 1230021187. The next prime is 1230021217. The reversal of 1230021210 is 121200321.

It is not an unprimeable number, because it can be changed into a prime (1230021217) 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, 39940 + ... + 63680.

It is an arithmetic number, because the mean of its divisors is an integer number (50641686).

Almost surely, 2^1230021210 is an apocalyptic number.

1230021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620533952).

1230021210 is an abundant number, since it is smaller than the sum of its proper divisors (2011046694).

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

1230021210 is a wasteful number, since it uses less digits than its factorization.

1230021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23919.

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

The square root of 1230021210 is about 35071.6582157160. The cubic root of 1230021210 is about 1071.4474282649.

Adding to 1230021210 its reverse (121200321), we get a palindrome (1351221531).

The spelling of 1230021210 in words is "one billion, two hundred thirty million, twenty-one thousand, two hundred ten".