10203223212 has 384 divisors, whose sum is σ = 34674124800. Its totient is φ = 2519424000.

The previous prime is 10203223211. The next prime is 10203223249. The reversal of 10203223212 is 21232230201.

10203223212 is a `hidden beast` number, since 1 + 0 + 20 + 322 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10203223211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18859662 + ... + 18860202.

It is an arithmetic number, because the mean of its divisors is an integer number (90297200).

Almost surely, 2^10203223212 is an apocalyptic number.

10203223212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10203223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17337062400).

10203223212 is an abundant number, since it is smaller than the sum of its proper divisors (24470901588).

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

10203223212 is a wasteful number, since it uses less digits than its factorization.

10203223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10203223212 its reverse (21232230201), we get a palindrome (31435453413).

The spelling of 10203223212 in words is "ten billion, two hundred three million, two hundred twenty-three thousand, two hundred twelve".