221168468077 has 8 divisors (see below), whose sum is σ = 224931430080. Its totient is φ = 217405984320.

The previous prime is 221168468057. The next prime is 221168468107. The reversal of 221168468077 is 770864861122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221168468077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221168468047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884293 + ... + 1106485.

It is an arithmetic number, because the mean of its divisors is an integer number (28116428760).

Almost surely, 2^221168468077 is an apocalyptic number.

It is an amenable number.

221168468077 is a deficient number, since it is larger than the sum of its proper divisors (3762962003).

221168468077 is a wasteful number, since it uses less digits than its factorization.

221168468077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239123.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 221168468077 in words is "two hundred twenty-one billion, one hundred sixty-eight million, four hundred sixty-eight thousand, seventy-seven".