1221233210994 has 16 divisors (see below), whose sum is σ = 2450422342368. Its totient is φ = 405751750272.

The previous prime is 1221233210993. The next prime is 1221233211067. The reversal of 1221233210994 is 4990123321221.

It is not an unprimeable number, because it can be changed into a prime (1221233210993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331494687 + ... + 331498370.

It is an arithmetic number, because the mean of its divisors is an integer number (153151396398).

Almost surely, 2^{1221233210994} is an apocalyptic number.

1221233210994 is an abundant number, since it is smaller than the sum of its proper divisors (1229189131374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221233210994 is a wasteful number, since it uses less digits than its factorization.

1221233210994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662993369.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 1221233210994 in words is "one trillion, two hundred twenty-one billion, two hundred thirty-three million, two hundred ten thousand, nine hundred ninety-four".