72101302101221 has 8 divisors (see below), whose sum is σ = 72720072898560. Its totient is φ = 71484853146352.

The previous prime is 72101302101151. The next prime is 72101302101223. The reversal of 72101302101221 is 12210120310127.

It is a happy number.

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 72101302101221 - 2²² = 72101297906917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72101302101223) 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, 580398245 + ... + 580522458.

It is an arithmetic number, because the mean of its divisors is an integer number (9090009112320).

Almost surely, 2^{72101302101221} is an apocalyptic number.

It is an amenable number.

72101302101221 is a deficient number, since it is larger than the sum of its proper divisors (618770797339).

72101302101221 is a wasteful number, since it uses less digits than its factorization.

72101302101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160921235.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 72101302101221 its reverse (12210120310127), we get a palindrome (84311422411348).

The spelling of 72101302101221 in words is "seventy-two trillion, one hundred one billion, three hundred two million, one hundred one thousand, two hundred twenty-one".