221207891652012 has 48 divisors (see below), whose sum is σ = 533988095961600. Its totient is φ = 71188276084800.

The previous prime is 221207891651963. The next prime is 221207891652037. The reversal of 221207891652012 is 210256198702122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17729812 + ... + 27509307.

It is an arithmetic number, because the mean of its divisors is an integer number (11124751999200).

Almost surely, 2^{221207891652012} is an apocalyptic number.

It is an amenable number.

221207891652012 is an abundant number, since it is smaller than the sum of its proper divisors (312780204309588).

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

221207891652012 is a wasteful number, since it uses less digits than its factorization.

221207891652012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45253206 (or 45253204 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 221207891652012 in words is "two hundred twenty-one trillion, two hundred seven billion, eight hundred ninety-one million, six hundred fifty-two thousand, twelve".