1221330223310 has 16 divisors (see below), whose sum is σ = 2221058263536. Its totient is φ = 483495675648.

The previous prime is 1221330223303. The next prime is 1221330223319. The reversal of 1221330223310 is 133220331221.

It is a super-2 number, since 2×1221330223310² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221330223319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629550692 + ... + 629552631.

It is an arithmetic number, because the mean of its divisors is an integer number (138816141471).

Almost surely, 2^{1221330223310} is an apocalyptic number.

1221330223310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221330223310 is a deficient number, since it is larger than the sum of its proper divisors (999728040226).

1221330223310 is a wasteful number, since it uses less digits than its factorization.

1221330223310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259103427.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1221330223310 its reverse (133220331221), we get a palindrome (1354550554531).

The spelling of 1221330223310 in words is "one trillion, two hundred twenty-one billion, three hundred thirty million, two hundred twenty-three thousand, three hundred ten".