79021201111 has 4 divisors (see below), whose sum is σ = 80103683392. Its totient is φ = 77938718832.

The previous prime is 79021201109. The next prime is 79021201117. The reversal of 79021201111 is 11110212097.

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

It is a cyclic number.

It is not a de Polignac number, because 79021201111 - 2¹ = 79021201109 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 (79021201117) 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, 541241031 + ... + 541241176.

It is an arithmetic number, because the mean of its divisors is an integer number (20025920848).

Almost surely, 2^79021201111 is an apocalyptic number.

79021201111 is a deficient number, since it is larger than the sum of its proper divisors (1082482281).

79021201111 is a wasteful number, since it uses less digits than its factorization.

79021201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082482280.

The product of its (nonzero) digits is 252, while the sum is 25.

The spelling of 79021201111 in words is "seventy-nine billion, twenty-one million, two hundred one thousand, one hundred eleven".