12221012120210 has 16 divisors (see below), whose sum is σ = 22137935333976. Its totient is φ = 4857268510848.

The previous prime is 12221012120117. The next prime is 12221012120321. The reversal of 12221012120210 is 1202121012221.

It can be written as a sum of positive squares in 4 ways, for example, as 7129450030609 + 5091562089601 = 2670103^2 + 2256449^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3892040507 + ... + 3892043646.

Almost surely, 2^{12221012120210} is an apocalyptic number.

12221012120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221012120210 is a deficient number, since it is larger than the sum of its proper divisors (9916923213766).

12221012120210 is a wasteful number, since it uses less digits than its factorization.

12221012120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784084317.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221012120210 its reverse (1202121012221), we get a palindrome (13423133132431).

The spelling of 12221012120210 in words is "twelve trillion, two hundred twenty-one billion, twelve million, one hundred twenty thousand, two hundred ten".