12221020010 has 32 divisors (see below), whose sum is σ = 23297358672. Its totient is φ = 4599761920.

The previous prime is 12221019997. The next prime is 12221020013. The reversal of 12221020010 is 1002012221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2410711801 + 9810308209 = 49099^2 + 99047^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12221019973 and 12221020000.

It is not an unprimeable number, because it can be changed into a prime (12221020013) 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, 1277204 + ... + 1286736.

Almost surely, 2^12221020010 is an apocalyptic number.

12221020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221020010 is a deficient number, since it is larger than the sum of its proper divisors (11076338662).

12221020010 is a wasteful number, since it uses less digits than its factorization.

12221020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17098.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12221020010 its reverse (1002012221), we get a palindrome (13223032231).

The spelling of 12221020010 in words is "twelve billion, two hundred twenty-one million, twenty thousand, ten".