1221332202110 has 16 divisors (see below), whose sum is σ = 2221061862096. Its totient is φ = 483496459008.

The previous prime is 1221332202031. The next prime is 1221332202113. The reversal of 1221332202110 is 112022331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221332202113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629551712 + ... + 629553651.

It is an arithmetic number, because the mean of its divisors is an integer number (138816366381).

Almost surely, 2^{1221332202110} is an apocalyptic number.

1221332202110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221332202110 is a deficient number, since it is larger than the sum of its proper divisors (999729659986).

1221332202110 is a wasteful number, since it uses less digits than its factorization.

1221332202110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259105467.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1221332202110 its reverse (112022331221), we get a palindrome (1333354533331).

The spelling of 1221332202110 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-two million, two hundred two thousand, one hundred ten".