1221022122010 has 8 divisors (see below), whose sum is σ = 2197839819636. Its totient is φ = 488408848800.

The previous prime is 1221022121999. The next prime is 1221022122013. The reversal of 1221022122010 is 102212201221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1217639420089 + 3382701921 = 1103467^2 + 58161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1221022122013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61051106091 + ... + 61051106110.

Almost surely, 2^{1221022122010} is an apocalyptic number.

1221022122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221022122010 is a deficient number, since it is larger than the sum of its proper divisors (976817697626).

1221022122010 is a wasteful number, since it uses less digits than its factorization.

1221022122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122102212208.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1221022122010 its reverse (102212201221), we get a palindrome (1323234323231).

The spelling of 1221022122010 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, ten".