221151694948 has 48 divisors (see below), whose sum is σ = 409091760000. Its totient is φ = 104317597440.

The previous prime is 221151694919. The next prime is 221151694991. The reversal of 221151694948 is 849496151122.

221151694948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221151694895 and 221151694904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58705761 + ... + 58709527.

It is an arithmetic number, because the mean of its divisors is an integer number (8522745000).

Almost surely, 2^221151694948 is an apocalyptic number.

It is an amenable number.

221151694948 is a deficient number, since it is larger than the sum of its proper divisors (187940065052).

221151694948 is a wasteful number, since it uses less digits than its factorization.

221151694948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6820 (or 6818 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The spelling of 221151694948 in words is "two hundred twenty-one billion, one hundred fifty-one million, six hundred ninety-four thousand, nine hundred forty-eight".