221367868075 has 24 divisors (see below), whose sum is σ = 289022126400. Its totient is φ = 167727785760.

The previous prime is 221367868027. The next prime is 221367868081. The reversal of 221367868075 is 570868763122.

It is not a de Polignac number, because 221367868075 - 2¹³ = 221367859883 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1733364 + ... + 1856686.

It is an arithmetic number, because the mean of its divisors is an integer number (12042588600).

Almost surely, 2^221367868075 is an apocalyptic number.

221367868075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221367868075 is a deficient number, since it is larger than the sum of its proper divisors (67654258325).

221367868075 is a wasteful number, since it uses less digits than its factorization.

221367868075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127131 (or 127126 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 221367868075 in words is "two hundred twenty-one billion, three hundred sixty-seven million, eight hundred sixty-eight thousand, seventy-five".