72210001001 has 8 divisors (see below), whose sum is σ = 74584070400. Its totient is φ = 69838726320.

The previous prime is 72210000949. The next prime is 72210001009. The reversal of 72210001001 is 10010001227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72210001001 - 2³⁰ = 71136259177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72210001009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646091 + ... + 749568.

It is an arithmetic number, because the mean of its divisors is an integer number (9323008800).

Almost surely, 2^72210001001 is an apocalyptic number.

It is an amenable number.

72210001001 is a deficient number, since it is larger than the sum of its proper divisors (2374069399).

72210001001 is a wasteful number, since it uses less digits than its factorization.

72210001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397359.

The product of its (nonzero) digits is 28, while the sum is 14.

Adding to 72210001001 its reverse (10010001227), we get a palindrome (82220002228).

The spelling of 72210001001 in words is "seventy-two billion, two hundred ten million, one thousand, one".