77033011221101 has 4 divisors (see below), whose sum is σ = 82958627468892. Its totient is φ = 71107394973312.

The previous prime is 77033011221073. The next prime is 77033011221157. The reversal of 77033011221101 is 10112211033077.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30379002241225 + 46654008979876 = 5511715^2 + 6830374^2 .

It is a cyclic number.

It is not a de Polignac number, because 77033011221101 - 2³⁸ = 76758133314157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77033011221701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2962808123876 + ... + 2962808123901.

It is an arithmetic number, because the mean of its divisors is an integer number (20739656867223).

Almost surely, 2^{77033011221101} is an apocalyptic number.

It is an amenable number.

77033011221101 is a deficient number, since it is larger than the sum of its proper divisors (5925616247791).

77033011221101 is a wasteful number, since it uses less digits than its factorization.

77033011221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925616247790.

The product of its (nonzero) digits is 1764, while the sum is 29.

Adding to 77033011221101 its reverse (10112211033077), we get a palindrome (87145222254178).

The spelling of 77033011221101 in words is "seventy-seven trillion, thirty-three billion, eleven million, two hundred twenty-one thousand, one hundred one".