77221354101 has 8 divisors (see below), whose sum is σ = 105473069184. Its totient is φ = 50225270880.

The previous prime is 77221354097. The next prime is 77221354109. The reversal of 77221354101 is 10145312277.

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

It is not a de Polignac number, because 77221354101 - 2² = 77221354097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77221354109) by changing a digit.

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, 313907821 + ... + 313908066.

It is an arithmetic number, because the mean of its divisors is an integer number (13184133648).

Almost surely, 2^77221354101 is an apocalyptic number.

It is an amenable number.

77221354101 is a deficient number, since it is larger than the sum of its proper divisors (28251715083).

77221354101 is a wasteful number, since it uses less digits than its factorization.

77221354101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627815931.

The product of its (nonzero) digits is 11760, while the sum is 33.

Adding to 77221354101 its reverse (10145312277), we get a palindrome (87366666378).

The spelling of 77221354101 in words is "seventy-seven billion, two hundred twenty-one million, three hundred fifty-four thousand, one hundred one".