77100211021 has 8 divisors (see below), whose sum is σ = 77348304000. Its totient is φ = 76852303920.

The previous prime is 77100210989. The next prime is 77100211051. The reversal of 77100211021 is 12011200177.

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

It is a cyclic number.

It is not a de Polignac number, because 77100211021 - 2⁵ = 77100210989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77100210983 and 77100211001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77100211051) 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, 809680 + ... + 899878.

It is an arithmetic number, because the mean of its divisors is an integer number (9668538000).

Almost surely, 2^77100211021 is an apocalyptic number.

It is an amenable number.

77100211021 is a deficient number, since it is larger than the sum of its proper divisors (248092979).

77100211021 is a wasteful number, since it uses less digits than its factorization.

77100211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92939.

The product of its (nonzero) digits is 196, while the sum is 22.

Adding to 77100211021 its reverse (12011200177), we get a palindrome (89111411198).

The spelling of 77100211021 in words is "seventy-seven billion, one hundred million, two hundred eleven thousand, twenty-one".