221045655054 has 16 divisors (see below), whose sum is σ = 505247211648. Its totient is φ = 63155901432.

The previous prime is 221045655037. The next prime is 221045655071. The reversal of 221045655054 is 450556540122.

221045655054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221045655037) and next prime (221045655071).

It is a super-2 number, since 2×221045655054² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2631495852 + ... + 2631495935.

It is an arithmetic number, because the mean of its divisors is an integer number (31577950728).

Almost surely, 2^221045655054 is an apocalyptic number.

221045655054 is an abundant number, since it is smaller than the sum of its proper divisors (284201556594).

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

221045655054 is a wasteful number, since it uses less digits than its factorization.

221045655054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262991799.

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 221045655054 in words is "two hundred twenty-one billion, forty-five million, six hundred fifty-five thousand, fifty-four".