172221777033 has 8 divisors (see below), whose sum is σ = 229642814688. Its totient is φ = 114807628704.

The previous prime is 172221776953. The next prime is 172221777041. The reversal of 172221777033 is 330777122271.

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

It is not a de Polignac number, because 172221777033 - 2⁸ = 172221776777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172221777053) 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, 1663716 + ... + 1764197.

It is an arithmetic number, because the mean of its divisors is an integer number (28705351836).

Almost surely, 2^172221777033 is an apocalyptic number.

It is an amenable number.

172221777033 is a deficient number, since it is larger than the sum of its proper divisors (57421037655).

172221777033 is a wasteful number, since it uses less digits than its factorization.

172221777033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444663.

The product of its (nonzero) digits is 172872, while the sum is 42.

The spelling of 172221777033 in words is "one hundred seventy-two billion, two hundred twenty-one million, seven hundred seventy-seven thousand, thirty-three".