1221885923327 has 4 divisors (see below), whose sum is σ = 1221892026096. Its totient is φ = 1221879820560.

The previous prime is 1221885923257. The next prime is 1221885923369. The reversal of 1221885923327 is 7233295881221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1221885923327 - 2³⁶ = 1153166446591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221885925327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2740499 + ... + 3155012.

It is an arithmetic number, because the mean of its divisors is an integer number (305473006524).

Almost surely, 2^{1221885923327} is an apocalyptic number.

1221885923327 is a deficient number, since it is larger than the sum of its proper divisors (6102769).

1221885923327 is an equidigital number, since it uses as much as digits as its factorization.

1221885923327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6102768.

The product of its digits is 2903040, while the sum is 53.

The spelling of 1221885923327 in words is "one trillion, two hundred twenty-one billion, eight hundred eighty-five million, nine hundred twenty-three thousand, three hundred twenty-seven".