73111201210001 has 4 divisors (see below), whose sum is σ = 73150152304692. Its totient is φ = 73072250115312.

The previous prime is 73111201209983. The next prime is 73111201210027. The reversal of 73111201210001 is 10001210211137.

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 35168742744976 + 37942458465025 = 5930324^2 + 6159745^2 .

It is a cyclic number.

It is not a de Polignac number, because 73111201210001 - 2⁴² = 68713154698897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73111201210301) 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, 19475544530 + ... + 19475548283.

It is an arithmetic number, because the mean of its divisors is an integer number (18287538076173).

Almost surely, 2^{73111201210001} is an apocalyptic number.

It is an amenable number.

73111201210001 is a deficient number, since it is larger than the sum of its proper divisors (38951094691).

73111201210001 is a wasteful number, since it uses less digits than its factorization.

73111201210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38951094690.

The product of its (nonzero) digits is 84, while the sum is 20.

Adding to 73111201210001 its reverse (10001210211137), we get a palindrome (83112411421138).

The spelling of 73111201210001 in words is "seventy-three trillion, one hundred eleven billion, two hundred one million, two hundred ten thousand, one".