1221223103330 has 16 divisors (see below), whose sum is σ = 2198215730880. Its totient is φ = 488486098032.

The previous prime is 1221223103263. The next prime is 1221223103351. The reversal of 1221223103330 is 333013221221.

It is a junction number, because it is equal to n+sod(n) for n = 1221223103296 and 1221223103305.

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, 1846811 + ... + 2419329.

It is an arithmetic number, because the mean of its divisors is an integer number (137388483180).

Almost surely, 2^{1221223103330} is an apocalyptic number.

1221223103330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221223103330 is a deficient number, since it is larger than the sum of its proper divisors (976992627550).

1221223103330 is a wasteful number, since it uses less digits than its factorization.

1221223103330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785833.

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

Adding to 1221223103330 its reverse (333013221221), we get a palindrome (1554236324551).

The spelling of 1221223103330 in words is "one trillion, two hundred twenty-one billion, two hundred twenty-three million, one hundred three thousand, three hundred thirty".