705122011200021 has 16 divisors (see below), whose sum is σ = 994478214731136. Its totient is φ = 443483528184576.

The previous prime is 705122011200001. The next prime is 705122011200077. The reversal of 705122011200021 is 120002110221507.

It is a happy number.

It is not a de Polignac number, because 705122011200021 - 2¹¹ = 705122011197973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 705122011199964 and 705122011200000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705122011200001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69994238680 + ... + 69994248753.

It is an arithmetic number, because the mean of its divisors is an integer number (62154888420696).

Almost surely, 2^{705122011200021} is an apocalyptic number.

It is an amenable number.

705122011200021 is a deficient number, since it is larger than the sum of its proper divisors (289356203531115).

705122011200021 is a wasteful number, since it uses less digits than its factorization.

705122011200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139988487532.

The product of its (nonzero) digits is 560, while the sum is 24.

Adding to 705122011200021 its reverse (120002110221507), we get a palindrome (825124121421528).

The spelling of 705122011200021 in words is "seven hundred five trillion, one hundred twenty-two billion, eleven million, two hundred thousand, twenty-one".