211201423073 has 4 divisors (see below), whose sum is σ = 211733416980. Its totient is φ = 210669429168.

The previous prime is 211201423031. The next prime is 211201423079. The reversal of 211201423073 is 370324102112.

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 70165122769 + 141036300304 = 264887^2 + 375548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211201423073 is a prime.

It is a super-2 number, since 2×211201423073² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211201423079) 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, 265996358 + ... + 265997151.

It is an arithmetic number, because the mean of its divisors is an integer number (52933354245).

Almost surely, 2^211201423073 is an apocalyptic number.

It is an amenable number.

211201423073 is a deficient number, since it is larger than the sum of its proper divisors (531993907).

211201423073 is an equidigital number, since it uses as much as digits as its factorization.

211201423073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531993906.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 211201423073 its reverse (370324102112), we get a palindrome (581525525185).

The spelling of 211201423073 in words is "two hundred eleven billion, two hundred one million, four hundred twenty-three thousand, seventy-three".