73202223121 has 16 divisors (see below), whose sum is σ = 74395858320. Its totient is φ = 72017510400.

The previous prime is 73202223109. The next prime is 73202223137. The reversal of 73202223121 is 12132220237.

It can be written as a sum of positive squares in 8 ways, for example, as 120670225 + 73081552896 = 10985^2 + 270336^2 .

It is a cyclic number.

It is not a de Polignac number, because 73202223121 - 2⁵ = 73202223089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73202221121) 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, 40644421 + ... + 40646221.

It is an arithmetic number, because the mean of its divisors is an integer number (4649741145).

Almost surely, 2^73202223121 is an apocalyptic number.

It is an amenable number.

73202223121 is a deficient number, since it is larger than the sum of its proper divisors (1193635199).

73202223121 is a wasteful number, since it uses less digits than its factorization.

73202223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3924.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 73202223121 its reverse (12132220237), we get a palindrome (85334443358).

The spelling of 73202223121 in words is "seventy-three billion, two hundred two million, two hundred twenty-three thousand, one hundred twenty-one".