72299112101 has 4 divisors (see below), whose sum is σ = 72300856812. Its totient is φ = 72297367392.

The previous prime is 72299112097. The next prime is 72299112103. The reversal of 72299112101 is 10121199227.

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 6967240900 + 65331871201 = 83470^2 + 255601^2 .

It is a cyclic number.

It is not a de Polignac number, because 72299112101 - 2² = 72299112097 is a prime.

It is a super-2 number, since 2×72299112101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72299112103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808646 + ... + 893591.

It is an arithmetic number, because the mean of its divisors is an integer number (18075214203).

Almost surely, 2^72299112101 is an apocalyptic number.

It is an amenable number.

72299112101 is a deficient number, since it is larger than the sum of its proper divisors (1744711).

72299112101 is a wasteful number, since it uses less digits than its factorization.

72299112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744710.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 72299112101 in words is "seventy-two billion, two hundred ninety-nine million, one hundred twelve thousand, one hundred one".