1221220232323 has 8 divisors (see below), whose sum is σ = 1503040286048. Its totient is φ = 966240183744.

The previous prime is 1221220232303. The next prime is 1221220232327. The reversal of 1221220232323 is 3232320221221.

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

It is a cyclic number.

It is not a de Polignac number, because 1221220232323 - 2⁵ = 1221220232291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221220232327) 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, 6710001186 + ... + 6710001367.

It is an arithmetic number, because the mean of its divisors is an integer number (187880035756).

Almost surely, 2^{1221220232323} is an apocalyptic number.

1221220232323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1221220232323 is a deficient number, since it is larger than the sum of its proper divisors (281820053725).

1221220232323 is a wasteful number, since it uses less digits than its factorization.

1221220232323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13420002573.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1221220232323 its reverse (3232320221221), we get a palindrome (4453540453544).

The spelling of 1221220232323 in words is "one trillion, two hundred twenty-one billion, two hundred twenty million, two hundred thirty-two thousand, three hundred twenty-three".